Tabulation, bibliography, and structure of binary intermetallic compounds V Compounds of aluminum and indium

(1)

Ames Laboratory ISC Technical Reports Ames Laboratory

4-23-1959

Tabulation, bibliography, and structure of binary

intermetallic compounds. V. Compounds of

aluminum and indium

A. E. Bay

Iowa State College J. A. Kingston Iowa State College J. F. Smith Iowa State College

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Recommended Citation

Bay, A. E.; Kingston, J. A.; and Smith, J. F., "Tabulation, bibliography, and structure of binary intermetallic compounds. V. Compounds of aluminum and indium" (1959).Ames Laboratory ISC Technical Reports. 217.

(2)

Tabulation, bibliography, and structure of binary intermetallic compounds.

V. Compounds of aluminum and indium

Abstract

This report is the fifth and last in a series. The previous reports listed the compounds of elements.

Disciplines

Engineering | Materials Science and Engineering | Metallurgy

(3)

Tabulation. Bibliography, and

Structure of Binary Intermetallic

Compounds.

V.

Compounds of

Aluminum and Indium

by

A.

E~

Ray,

J.

A. Kingston,

and

J.

F. Smith

(4)

UNCLASSIFIED

v

ISC-1155

Tabulation

.

Bibliography, and

Structure of Binary Intermetallic

Compounds.

V. Compounds of

Aluminum and Indium

by

A~

E. Bay,

J.

A. Kingston, and

J.

F. Smith

April 23,

1959

Ames Laboratory

at

Iowa State College

F

.

H

.

Spedding, Director

Contract W-7405 eng-82

(5)

ISC-llS5

This report is .distributed according to the category Metallurgy and Ceramics as listed in TID-45oo, October 1, 1958.

Legal Notice

This report was prepared as an account of Government sponsored work. Neither the United States, nor the Commission, nor any person acting on behalf of the Commis-sion::

A. Makes any warranty of representation, exoress or imnlied, with respect to the accuracy, completeness, or usefulness of the information contained in this report, or that the use of any information, apparatus, method, or process disclosed in this report may not infringe privately owned rights; or

B. Assumes any liabilities with respect to the use of, or for damages resulting from the use of any information, ap~aratus, method, or process disclosed in this report.

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Printed in US~. Price $1~25 ~ Available from the

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Part I:

Part II::

Part III::

ISC-1155

TABLE OF CONTENTS

Page

Tabulation of Compounds. • •- •. .. .. .. .. .. .. .. • • • • .. • • • •

5

References

.

..

.

. .

...

. . .

~

.

. .

. . .

. .

.

(7)

4

ISC-1155

This report is the fifth and last in a series. The previous reports listed the compounds of elements as follows:

ISC-795, Lithium, Sodium, Potassi~ and Rubidium ISC-812, Beryllium, Magnesium, and Calcium

(8)

PART I: TABULATION OF COHFOUNDS

,

COMRJUND CRYSTAL LATTICE

REFER-CLASS PARAMETERS (j) STRUCTURE REi'1ARKS ENCES

AlLi cubic a:6.37 B32 X-ray powder, thermal and 1,2,

microscopic data 3,4

AlLi2 Thermal and micrographic

anal-ysis; forms peritectically at

521°C. 3,4

811_-Al2Cu tetrag- _a:::4.o4 _Single_c~stal_{x-ray data;}

onal c=7 .9 first precipitate formed on 162, ageing of Al-Cu alloys. 163

91-Al2Cu tetrag- a:::4.o4 Cl Single crystal x-ray data; this onal c=5.8 is an intermediate precipitate

observed in age-hardened Al-Cu

alloys. 9,163

8-Al2Cu tetrag- a::6.o66 Cl6 X-ray powder data; narrow range

onal c:::4.874 of homogeneity of 67.1-68.05 11,13, a/o Al at 548°C. 163

~h-AlCu ortho- a:::4.095

_fcmmrrJ

X-ray single crystal data, ther-rhombic bcl.2.02 mal analysis; high temperature

c:::B.652 phase. 13,16

n2-AlCu ortho- a:6.89 X-ray powder data, thermal rhombic b:::4.09 analysis; low temperature

c=9.89 phase. 13,17

Sl-Al3CU4 hexag- a:::B.lO

{P6/mmm)

X-ray single crystal data,

onal c::::lO. 00 thermal analysis; high tem- 13,16, perature modification. ₁₇

.,

~₂-Al₉Cu₁₂probably a=7 .07 X-ray powder data; low te~-mono- b:::4.08 perature modification; A=21. clinic c=10.02

,6' =90°38' 17

Y

_2-Al2cu3 pseudo- a=8.69 ... vD81-3 X-ray powder data; exists from

cubic 20.7-22.5 w/o Al; the structures

Al4Cu9, Al19Cu32, and Al2Cu3 are so closely related that no two-phase regions can be found among

them. 17

'6]_

-All9Cu32 probably _,D81-3 X-ray powder data; stable at

35.3-mono- probabl7 38.1 a/o Al; A=l02; a modification clinic _-

rc3-c

_s _m-·

.

of Al4Cu9; has deformed

o

-brass

stn1cture; parameter for

pseudo-cubic cell of 51 atoms is a= 12,13,

(9)

CHYS'I'AL LATTIC~ ₀

COMPOUND _QLAS~ fARAMl~'!:§~~ STHU!2'1U HE

cubic

f!

_{-J\.1Cu3 cubic}

;j,

_-.'\1Cu3 cubic

ortho-rhombic hexag-onal cubic cubic cubic cubic a•2.95 aa).82 a•4.52 b=5.21 c=-4.23 a::2.811-2.885 cs4.663-4.582 a~3.25

a•6.oo

a-6.05 A2 DO 3

AJ

A2, Cl

B3

X-ray diffraction data with intensity 10, measurements; thermal analysis; exists ll, from 16-18.8 w/o Al. 13,17

X-ray powder data, thermal and micro-

5 ,

scopic analysis; disordered structure, 10, stable only at higher temperatures; 11,13, lattice constant measured at 600°C. 14,28

X-ray diffraction data with intensity measurements; thermal and microscopic analysis; ordered structure; on further cooling of alloys

<

13.1

w/

o Al, ~~ structure transforms to a ~"structure which is a distorted t'structure

(cu3Al); ~'can be converted to

d'

5,10, by mechanical deformation. 13,14

X-ray powder data, thermal analysis; structure is a distortion of the

~,phase; also indexed as hexagonal (14) with ac--2.60' c: 4.106/1.

13, 14, 36,37

X-ray powder data; range of homogene-ity of 27-40 a/o Al; (22) says no

intermetallic compound exists here, 18, only a solid solution. 21,22

High temperature x-ray pO\vder data; phase exists above 600°C; random 18, arrangement of atoms on lattice sites.21

X-ray diffraction data with intensity measurements; micrographic analysis; low temperature phase; phase is of

variable composition; A-20; 15 Ag and 19,

5

Al a toms randor:1ly arranged. 20, 21

X-ray powder data with intensities. 23,24

X-ray powder data; instead of this structure (23) and (25) report a

complex powder pattern. 23, 25,26

Thermal analysis and metallography. 23,25

Thermal analysis and metallography; compound may be Al3Aus; structure is probably similar to ~-brass, but

(10)

COMroUND CRYSTAL LATTICE

REFER-CLASS PARAMETERS(R) STRUCTURE REMARKS ENCES

-AlAuu cubic a::6.919- [Th-P2;t3_7 X-ray powder data; formerly

6.923 called A1Au3; undergoes an

order-disorder transformation at elevated temperatures to A2

strgcture with a=3.24 ~ a~ 6,23,

~00

c.

2~,27

Al3Mg2 cubic a=28.19

{"'o~-Fd3rnJ

Laue and Weissenberg x-ray data; thermal analysis; comolicated

structure with 1172 atoms/cell; 29, earlier reported as hRxagonal 30,31, with a=ll.40, c=l7.91 (31) 34,40

..., Al9Mg11 X-ray powder data, thermal

anal-ysis; exists below 410°C; phase 29, diagram in this region somewhat 3h,35,

uncertain. 38,40

Al12Mg17 cubic ad.0.469- Al2 X-ray powder data, thermal

10.591 analysis. 29,31,

(51.6-61.5 a/o Mg) 39,40

Al4Ca tetrag- ar:4.36 Dl3 X-ray powder data; narrow

onal c=ll.09 range of homogeneity. 41

Al2Ca cubic ad3.038 Cl5

_"

41,42

AluSr tetrag- a=4.46 Dl3 Fbwder and single crystal x-ray

onal c=ll.07 data; range of homogeneity at

700°C is ~15-25.7 a/o Sr. 43

AlSr cubic a=l5.8 Powder and single crystal x-ray

data; ~=116; the structure is probably a superstructure based

on the B2 structure. 43

AlhBa tetrag- a=4.540 _D13 Laue and rotation x-ray data;

onal c~11.16 thermal analysis. 4!~

Al2Ba X-ray diffraction data,

thermal analysis. 45

AlBa hexag- a::6.01 Single crystal x-ray data,

onal c=l7.78 thermal analysis; A=l6. ₄₅

Al2Ba9 Existence reported on basis of

thermal analysis; x-ray dif-fraction dat~ fails to verify

existence. ₄₅

(11)

CHYSTAL LATTICE 0

COMPOUND CLAS~ PAlU\MiJTE~S(A) ST1iUCTURE riliMAHKS

RE~,EH

l<.:NCl'.:S

Al-Zn

tetrag- a~4.42

onal c=lO.~

cubic 8:' 8.131

tetrag- a=4.374 onal c~10.12

cubic

ortho-rhombic

hexag-onal

a"'8.11

a=-9. 27 b=7.68 c=-

S.

76

a-::=7 .043 c-5.4.51

f5

-A1Ce3 cubic a 4.985

AlPr

AlNd cubic a:-:J. 74

Cl5

pro£2bly

ffi2v-~

Cmc21]

112

B2

No compounds formed. 46

X-ray powder data, thermal analysis, microscopic examination. J2,48

"

32,33,48

Thermal analysis, microscopic

exam-ination. 32,48

" 47

X-ray powder data, thermal analysis. 32

II

X-ray powder data, thermal analysis and metallography; indexint only probable.

X-ray powder data, thermal analysis and metallography; stable below 230°C.

32,49

32,47,

52,85

85

X-rqy powder data, thermal analysis and metallography; exists above 230°C; these two modifications of ce3Al were found by (85) ,-instead of ce3A12 postulated by (47). 85

Thermal analysis, microscopic exam-ination; two allo~rogic forms exist,

transforming at 1018 C. 50,133

Thermal analysis, microscopic

exam-ination. 50

II 50

II 47

(12)

COMPOUND

~-AlPu

CRYSTAL Ul.T'l'ICg o

CLASS ~~~~~~~~~(~L ~!~~~~~~~

R&E'ER-~NC.&S ortho-rhombic hexag-onal cubic cubic tetrag-onal ortho-rhombic cubic cubic hexag-onal ortho-rhombic mono-clinic

a""·4.42

b=6. 26 c= 13.65

a-=6.10

c=l4.4'f

a=7.8Jl

a=-4.499 or 4.530 c•4.538 or

4.475

a=-4.42 b::-6.26

c=lJ.

n

a-=?.785

a'='J.Ol

c:J.25

a .. 8.84 b=9.02

c=5.67

a=8.523

br.ll.OO c·::-7 .393

;.&-=l4J0 _{2 9}_I_.

c

J

LD2h--Immy

-4

L

0o

h--P6,/mms:.7

Cl5

112

.LD

2 s __

2h

Imm~7

112

Cl5

C32

- 12

L

02v--Bb2~/

fowder and single crystal x-ray data.

"

X-ray powder data.

53,55

53, 54,55 53,55 X-ray diffraction data; probably one or more forms of a distorted 82

structure; a range of solid solubility may exist in this region of the

phase diagram. 55

Structure partially ordered; a and c axes interchanged by one investi-gator on basis of intensity data.

Powder and single crystal x-ray data.

X-ray powder data.

"

Powder and single crystal x-ray data. 55 56 56 56 57' 58,160 A probable decomposition product of

AlB_{2 ;} crystallizes in very low

symmetry. 160

Single crystal x-ray data; pseudo-tetragonal.

169

LC~n-

Single

c~stal

x-ray data; origin-Ccf~ or ally reported as AlB13; reported as

LC~-- orthorhombic (169) with ~12.29,

c

2.

7

or b~l2. 57, c 1014, space group

[c-'f__

ii5?8--Imma7. 59,169

(13)

-COMPOUND Al3Ti AlTi Al-Zr AlZr) AlTh

Ct\Y3TAL LATTICE

CLASS PARMmTj~RS (R) STRUC'l'UH.E REMARKS

RElt'ER-ENCI:!S

tetrag- a=lO.l4 ~~-- Single crystal x-ray onal c~l4.26 P~l2~or cubic.

data;

pseudo-tetrag- a=5.436 onal c=8.)96

tetrag-

a•4.01-onal 3.99

c-.4.07-4.08 hexag-onal a=5.775 c~4.6J8

(25 w/o Al)

tetrag- a:4.013 onal c:l7.Jl0

ortho- a=l0.42 rhombic b =7. 22

c•4.98 cubic hexag-onal hexag• onal tetrag-onal ortho-rhombic ac6.499 c=4.626 a=4.393 c=4.164 a:.9. 86 c:7.81

a:-1.1.45 b-4.42 c-4.19

/_5

--PtlJ2JY

LlO

112

59,169

X-ray powder data.

60,64

X-ray powder data, thermal and micro-graphic analysis; parameters var.y with composition; phase exists from

35.5-44.5

w/o

Al at o00°C. 60,61

X-ray diffraction data; isomorphous with Ti3Sn; possible evidence for another compound of higher Ti content; superlattice.

62,63,

143,144

Thermal analysis shows Zr2Al (~lJ w/o Al), Zr5Al3 (~15 w/o Al), Zr3Al4

(16.46 w/o Al), ZruA11 (18.15 W/0 Al),

ZrAl (22.82

w/o

Al}, and Zr Al

(30.72 w/o Al) in addition to

~he

compounds listed below. 66

Single crystal x-ray data.

X-ray powder data.

II

64,56

66

65,66

LD~h-- X-ray powder data.

Pg

3

/mm.s.7

67,68

C32 X-ray powder and neutron diffraction

data. 67,68

X-ray powder data; stable only in a narrow temperature range at -l300°C; powder sample not single-phase. 67

Powder and single crystal x-ray data; structure tentative.

(14)

COMPOUND

AlAs

AlSb

CRYSTAL

CLASS

LATTICE 0

PARAMgTliliS (A) S TRU CW RE REMARKS

REFER-ENCES tetrag-onal a=8.13 c=4. 22

tetrag- a=7.62

onal c=5.86

rhombo- a=8.55 hedral oc: ::220 28 •

5

L54h--P4/mb_I!!7

Cl6

X-ray powdgr data; stable only above llJO C.

X-ray powder data.

67,6o

67,68

74

cubic a=-14.586

f5~-

l<'d3~7

Powder and single crystal x-ray data; range of composition varying from

Al1oV to A1_21V2; originallY 70, 71,72 mono-clinic hexag-onal a=-25.4 b:::7.59 c=ll.O 11 =127°

a=-7 .6928 c==_{l7 .o40}

tetrag- a-=5.345 onal c=8.322

cubic a=9.207

tetrag- a=5.438 onal c=8.60l

tetrag- a=5.433 onal c=8.553

cubic a==5.63

cubic

reported as ~1₁₁v.

~ingle crystal x-ray data; space

group tentative.

70,73

~h--

Powder and single crystal

x-r~

data; originally reported as VA16 .

P63/mm~7 69

B3

X-ray powder data.

X-ray powder data; range of composition variation.

X-ray powder data,

X-ray powder data, thermal and microscopic analysis.

70

'70

64

64,197

X-ray powder data, tqermal analysis. 135

X-ray powder data.

_75,78,

(15)

CRYSTAL LAT'i'ICE

COJI!~OUND ~!!l.3~

PARA"IIm'Tl!:RS(Rl

~!RUC'l'l!_H.E

11t.:t:1Al1KS

REl<'ER-ENCES

Al

₄

Cr ,

Al

₃

Cr

Al9Cr4 Al8cr5 A1Cr2 Al·-Mo Al12Mo . AlMo)

Al12

w

.

Al W

5 Al4W mono-clinic ortho-rhombic rhombo-hedral a:~0.47 b=7 .64 a=25.36

t-3::.155° 101

a-=~4.8

b=24.7

c:::JO. ~

a=7 .805 oc=l09° 7.61

tetrag- . a-=.).004 anal c~8.647

cubic a=-7 .573

cubic ~=-4.9495

cubic a-::.7.580

hexag- a:4.9o2o anal c•8.8570

mono- a-=-5.272 clinic b=l7. 771

c .. 5.218

13 ==100° 121

D810 C48

LT~--

_rffil7

Al5 5

Lfh--rrriy

~--p

37 LC;--cij

Laue and rotation x-ray data; the

was originally indexed as ortho-rhombic by (81), with a=-19.99, b:

12.47, c 34.51

A.

cell

80,81, 156

X-ray powder data, thermal analysis; there is some discussion of the relationship of this structure to structure of Al7Cr included in reference ( 156) •

the

81,155, 156

X-ray powder data, thermal analysis. 81

"

81

X-ray powder data, thermal analysis; two phases similar in structure are present in this region, with compo-sition ranges so nearly the same they are represented by the same formula. 81

X-ray powder data; this structure is pseudo-cubic and is closely related 81, to the

o

-brass structure. 82,83

X-ray powder data.

82

Thermal analysis indicates the

exist-ence of MoAl5, MoA12 or 3 Mo1.U,

and possibly another compouna

between the latter two.

87,88

X-ray powder data.

86

X-ray powder data, metallography. 87

X-ray powder data.

86

Powder and single crystal x-ray

data. 89

(16)

COMPOUND

Al3U

Al₂U

Al2Se3

Al)Te

Al 2Te3

""'Al12Mn

AlMn

CRYSTAL LATTICE 0

CLASS PARAM~TERS(A) STRUCWRE .clEMA.nKS

RElEH-ENCES ortho-rhombic cubic cubic hexag-onal cubic a'"'4.4l b=6.27 c=-13. 7l

a::4. 287 a= 7.811

a:o).89 C'-'6,30

a=l3 .28

22

fC2v-- Single crystal x-ray data/ ' ·

!~~~7

or

LD2h--I~7

112 Cl5

B4

X-ray powder data.

"

90

91

9l

X-ray powder data; a second modifi-cation exists at higher temperatures;. 92

Thermal analysis.

"

94,95 93' 94,95

X-ray powder data, thermal analysis; metast~ble phase formed on annealing

below 550°C. · 98,99

or tho- a=6.4978 rhombic b==7.5518

17

LD2h-- Single crystal x-ray data; previously reported as MnAl7, MnAl5, or MnAl4• 96,97,

100

hexag -onal ortho-rhombic tri;.. clinic c=8.8703 a=28.4l c=l2.)8 a""'l4.82 b::.:l2.63 c=l2.46 a=5 .092

b:o8.862

c=-5.047

()(. ::85° 19 I ' ,8 ::-100° 0:::.-105° 20' cubic a~2.98

Ccm!!!7

B2

X-r~ powder data.

100 X-ray powder data; thermal analysis. 100,

101, 134 Single crystal x-ray data;

pseudo~onoclinic.

X-ray powder data, thermal analysis; 77

wide range of homogeneity from 102,

49-67 w/o Mn. 134

On the basis of x-ray powder diagrams

(110) maintains that this phase is distinct and different from FeAl);

however,there is no question but that 109, the diffraction patterns are very

no,

(17)

A1Fe

A_1Fe2

t\lti'p

. '3

J.ll3Co4

A_{l 3Co}

A1Co

0

CLA . .:iS PAii.A1bT8RJ (A) STJUCTURE ENCtS

mono-cli!lic ortho-rhombic rhombo-hedral cubic hexag-ona1 cubic

a:.:.E).489

b~J.083l

c~l-2.476

'8 =107° 43 I

a"-7 .S75

b'-6.403

C"4.~03

a

6.3Z7

·"'- .'J7a 24'

a'~.908

a 5. '792

mono- a•B.SS65

clinic b'· 5. 290

hexag-onal cubic ortho-rhombic hexag-onal C"'6,21JQ

/j - 94. 760°

a==-7.671

C'"' 7,608

a=-2.862

a-6.611 b 7.366 c:-4.812

a"4.036 c-4.900

3

LC2h---17

L

l)

-2h

Cmc~7

82

10)

Single crystal x-ray data, thermal 97,112, and microscopic analysis; previ:>usly 113, reported as monoclinic. 114

X-ray powder data, thermal and

:nicro-scopic analysis; ~- reported as 74°91

by ( 113) ; ( 106) ·reports the existence lOt>, in ti1is region of an additional 113,

high temperature orthorhombic phase 114, which cannot be retained on ::jUenching.l57

X-ray powde+ data, thermal analysis.l03,l04

Cl4 Unstable phase claimed to be present

vo

₃

in a complex .r'e-Ni-Cr alloy. 107

X-ray powder data, thermal analysis. 103, 104,108

ff-5 .

L C2h ~- 3ingle crysta~ x-ray, c;lata.

115_,

116,

120

P21/2;7

D3 _ll

R2

Camplica ted powder pat tern. 116

Qualitative x-ray study indicates

possible existence of this phase. ll6

X-ray powder data.

!I

X-ray powder data.

X-ray powder daLa; powder data from

116, 117 116, 118 120, 121, 122,123

(18)

CttYSTAL LATTICI~ 0

Rl!;~'F.:R-COMPOUND CLASS PARAMET~~HS (A) STHUC1'UHE RgMAH.KS .c.'NC~

- - -

---AlNi cubic a•2.880 82 Powder and single crystal x-ray 121,123,

(49.4 a/o Ni) data; thermal analysis. 124,1~5

A1Ni3 cubic a•3.57- 112 X-ray powder data, thermal analysis; 123,

3.59 lattice varies with heat treatment 124,

given alloy. 125

AlRh cubic a=-~.<)9 B2 X-ray analysis. 84,170

Al3Pd ortho- a=7 .085 _LD2h--..,.12 _.X-ray powder data, thermal analysis. rhombic b=7.531

~~8!!!7or

~

c-5.087 _LC2v-- 127,

Pnn~7 129

A13r>d2 hexag- a•4.21 _D513

_"

127,

onal ca5.14 128,

(40 a/o Pd.) 129,130

cx-AlPd mono- a=9. 70 X-ray powder data, thermal analysis;

clinic b:l5.17 low temperature modification; accord- 84,

c=5•25 ing to (127) this phase is hexag- 127,

13=-78. 90°. onal with a~J.958, c~5.614

A.

·

129

/J~AlPd cubic a=-3.046 B2 X-ray powder data, thermal analysis; 128, high temperature modification (above 129,

900°C). 130

16

A1Pd2 ortho- a:. 7. 776 _LD2h-- X-ray powder data; thermal and

rhombic ,b=5.41S metallographic analysis. 1)0,

c::4.057 Pnap..7 170

A lOs cubic· a:.).005 B2 X-ray powder data. 84

A:t!r cubic a•~ • _.983 . B2

_"

84

Al3Pt Thermal analysis. (133) reports an

additional intermediate phase of composition PtA1

_0,

but experimental basis for the report is not 132,

specified. 133

Al2Pt cubic a•5.922 Cl X-ray powder data. 131

(19)

CRYSTAL LATTICE ₀

COMPOUND CLASS PARAMETERS (A) STRUQTURE REMARKS

REFER-ENCES

InLi

InN a

cubic cubic tetrag-onal cubic hexag-onal cubic tetrag-onal cubic hexag-onal a==6.8o0 a=7 .312 a=8.99 c=9 .16 a=-9.250 (29.6 a/o In)

a=4.277 c=5.249 (35.6 a/o In)

a=3.046 (at 672°C)

a=6.883 c=5.616 a=9.905 a=2 .954 c==4.804 B32 B32 B8 A2 Cl6

X-ray powder data, thermal analysis.l45,146

X-ray powder data; (148) postulates the existence of two additional compounds in the system, In3Na and In2Na, 147, from cooling curves. 148

X-ray powder data, thermal analysis; exists below 630°C; tetragonally

distorted cube; related to the 150,

'( -brass structures. 158

High temperature x-ray powder data; 150, thermal analysis; exists above 158,

6lo°C. 159

X-ray powder data, thermal analysis; phase extends from 32.4-38.8 a/o In 150, at room temperature; lattice param- 152, eters vary with composition. 153

X-ray powder data, thermal analysis; 20, exists above 574°C; ideal formula 150, would be InCu3 in accord with theory 151, for 3:2 electron compounds (167). 164,167

X-ray powder data, thermal analysis. 154, 164

X-ray powder data, thermal analysis; an order-disorder transformation occurs at 204°C; the difference be-tween the two modifications cannot 154, be detected with x-rays. 164

X-ray powder data, thermal analysis;

parameters vary slightly with compo-sition; an order-disorder transforma-tion occurs at 187°C; the lower-tem-perature phase has the hexagonal

(20)

CRY3TAL LATTICE 0

COM~QUNJ2 CIJ:.~ PARAMETE~{!L STRUCTURE REMARKS

REl<"'E!i-ENC.ES

InAu

ln-Mg

cubic .

tri-clinic

a--4.30 b=l0.59 c~J.54

Cl

o(. . 70.54°, A'-90.00° ¥:::90.17°

cubic

hexag-onal

A)

X-ray powder data; thermal and microscopic analysis.

X-ray and thermal analysis; pseudo-orthorhombic.

131, 164,168

112,

168

X-ray powder data; thermal and micro-scopic analysis; undergoes a transfor-mation around 370°C, probably of 164,

order-disorder type. 168

On the basis of thermal evidence only, (168) postulates this phase with a very small region of homogeneity;

(165) and (170) mention an

ortho-rhombic compound with this formula 165, with the Cu3Ti type s~ructure, a-== 168,

5.86, b~S.l7, CP4.75 A. 170

X-ray powder data; thermal and micro-scopic analysis; homogeneous from

9.8-12.8 w/o In at room temperature; 164, parameters vary slightly with 167,

composition. 168

X-ray diffraction data, thermal analysis; disordered f.c.c. phase existing above ,..., J00°C from ""24-54 a/o In; at lower temperatures orders to the 112 structure at -25 a/o In, to 110 structure around 50 a/o In; orders to an orthorhombic structure at intermediate temperatures and con-centrations.

(15) postulates the existence of InMgz or 3, which was not found by (187); results of unpublished work are given in (204), reporting

3

15, intermediate phases with structures 166, and lattice parameters given, but 187, no compositions specified. 204

X-ray diffraction data; thermal anal-ysis; exists below 298°C; (166)

reports complex structure; (15) reports this compound hexagonal and

(21)

·CRYSTAL LATTICE

CO~~

· ~l!fi~ ~!A f!t?.AME'!:(Rl ST~UCTU~

f~EMARKS

InCa

In-La

In-Ce

In-Pr

· In-Tl

cubic a•4.68o

cubic a=-4.67

cubic

cubic a•4. 7445 (22.73 a/o Tl)

' ~4. 7901

; (55.33 a/o Tl) Ll2

Ll,2

112

X-ray diffraction data; thermal analysis; (15) postulates the exist-ence in this region of orthorhombic In2Mg5, isomorphous with Ga2Mg5;

(156) reports a complex structure. 15,166

X-ray powder data; structure is

noncubic. 149

(7) draws an analogy between the Ce-In and La-In systems, postulating the existence of Lain3, La2In3,

Lain, La2In, and ta3In.

7

Thermal analysis indicates the existence of rn3ce, In3ce2, InCe,

InCe2, and InCe3.

7

X-ray powder data. 7

X-ray powder, thermal, and micro-graphic data indicate the existence of In3Pr, In3Pr2, InPr, InPr2, and

InPr3 • 8

X-ray powder d~ta; thermal and micrographic -analysis.

X-ray powder data; phase is partially ordered.

Thermal analysis indicates the existence of 3 compounds: InHgS, lnHg, and In11Hg.

X-ray diffraction data; thermal analysis; wide range of homogeneity;

8

55

191

there was a question as to the exist-ence of a phase boundary between this cubic structure and the tetrag-onal solid solution region; recent work (201) has confirmed the ex~stence

of a narrow two-phase region be~ween 189, the In solid solution and this f.c.c. 201,

(22)

CRYSTAL LATTICE 0

COMPOUND CLASS PARAMETERS (A) STRUC'IURE REMARKS

llliFER-ENCES

hexag- a~5.89

no

₁₉

ona1 c-==4.76

(~39

w/o

In)

InZr3 cubic a,=;4.46l 112

In3Sn tetrag- aF3.470

onal c=4.39l

{24.37 a/o Sn)

a-=3.2178 -1

InSn4 hexag-

LD6h--onal c=2.9990

(18.64 a/o In) P6/~

In-Pb tetrag- a=4.867

onal c=4.539

(14.3 a/o Pb) a.-4. 905 c=4.554 (27 a/o Pb)

InAs cubic a=6.0584 B3

InSb cubic a•6.47877 B3

In2Bi hexag- a=5.498 C32

onal c=3.291

InBi tetrag- a=5.ooo BlO

onal c=4. 773

In3

u

cubic a=4.60l3 112

X-ray powder data; (161) reports in addition a cubic phase {possibly the 112 structure) near 40 a/o In, with 143,

a=4.22

A.

161

X-ray powder data, thermal analysis; phase exists from 22.4-28.5 a/o In and possibly to higher In contents which were not investigated; possibly

the ordering is incomplete. 137,161

X-ray powder data, thermal analysis; 138, region of existence of """14-27 a/o 140,172,

Sn.

+

73,174

X-ray powder data; thermal and micro- 140, scopic analysis; region of existence 141, of -75-88 a/o Sn; monatomic unit cell 172, with random distribution of atomic 174,

species. 188

X-ray diffraction data, thermal anal-ysis; range of existence of

-14.3-31 a/o Pb; this intermediate phase 2(!):1!,

probably occurs because the difference

in crystal structure of Pb and In 202,

precludes continuous solid solution. 203

X-ray powder dat~, thermal analysis. 75,136

II _75,78,

139,183

X-ray powder data with intensities; thermal and metallographic analysis;

from single crysta~ x-ray 0data (190) 142,

reports~=5.496, c~6.579 A, space 176,

group

LP

h--C6/mm£7· 190

X-ray powder data with intensities; 142, thermal and metallographic analysis. 175,

176

(23)

CRYSTAL LATTICE o

COMPOUND CL\SS \. PARAMETIERS(A) S'l'HUCTUHE REMARKS _.._' HEtER-ENCES

InSe

ortho- a~4.073 rhombic b=l2.26 c•l5 .26

rhombo- a-4.02 hedral c~s.os

(hexagonal cell)

aC-In2se3 hexag-onal

ortho-rhombic

InTe tetrag.:. onal .

cubic , ,

rn2Te

5

mono-' .

clinic

In1VJ_n3 cubic

In-Co ' a=3.99 c=-19.0 a•4.46 b~l2.61 c=l5.35 a'=-8.4)7 .c=1.139

a=-6.14₀,.

·a=4 • .38 b=l6.11

.c=lJ~37

/3=92.05°

.

a=9.43s

B37

B)

D81-3

J

X-ray powder data •.

II

Single crystal x-ray data; high temperature modification; exists a.bove 600-700°C.

11'7, 178 177, 178

171,

178, 184

Complex powder pattern; low tempera-ture modification; further modifi- 171, cations of In2Se3 may exist. 178

X-ray powder data.

•Powder and single crystal x-ray data; thermal analysis.

177, 178

A 178,

179

X-ray powder data, thermal analysis; 178, some metal positions are statisti- 180, cally vacant; from single CrYStal 181, work (18~) reports a~l8.40

A.

182

X-ray analysis.

177

1-ray powder data; thermal and micro-scopic analysis; from magnetic meas-urements (193) believes this

com-pound to be Mn2In, while (194), also 192, on the basis of magnetic measure- 193,

· ments, reports Mn4In. 194

Thermal, microscopic, and x-ray analysis by (195) indicates the formation of Co3In2, Coin, and Coin2•

(24)

CRYSTAL LATTICE 0

REfER-COMPOUND CLASS PAfU\.Ml~T l!.:RS (A) STHUCTURE HE MARKS ENCES

- - -

----'""In Ni

3 cubic a=-9.~00 ""D8l-3 X-ray powder data. 164,198

I _{n3 12}N· hexag- a"' 4.396 _D513 X-ray powder data; (200) calls this 164,

onal c~S.302 _{phase Niln2•} 198,200

InNi cubic a=3 .099 · B2 X-ray powder data; high temperature

modification; range of homogeneity 164,

of -"'45-60 a/o In. 198

InNi hexag- a=4.545 B35 X-ray powder data; low temperature 164,

onal c::o4.353 modification. 198,199

4

InNi 2 hexag- a=4.185 _ffi6h-- X-ray powder data; range of homoge- 152,

anal c=5 .135 neityi'V 33-39 a/o In .at lower 164,

P63/mm£7 temperatures. 198,199 ;

InNi) hexag- a=5.33l _D019 X-ray powder data. 164,

onal c:.4. 251 198

InHh cubic a=3.20 B2 X-ray analysis. 84,170

-vin3Pd cubic a==-9.44 _"-'D8l-3

_"

164

In3Pd2 hexag- · a:4.53 _D513

_"

onal C'"5.50 164

InPd cubic a=).257 B2 II ₁₆₄

a=8.24 -16

_"

---_InPd2 or tho-

LD2h--rhombic b-=5.61 164,

c:::.4.22 Pna~7 170

InPd) tetrag- a=-4.07 A6

"

ona1 c=) .80 164

In 7Pt3 cubic a=-9.L~35 _LOh----9 X-ray powder data.

Im3~7 128

In2Pt cubic a==6.)66 Cl X-ray powder data; stable only at

high temperatures. 131

In3Pt2 hexag-, a:::4.)3 _D513 X-ray analysis.

(25)

22 '

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158. Reynolds, Wiseman, and Hume-Rothery, J. Inst. Metals

80,

637-640 (1952).

159. Hume-Rothery, Betterton, and Reynolds, J. Inst. Metals 80, 609-616 (1952).

160. Lihl and Jenitschek, Z. Metallkunde 44, 414-417 (1953).

(32)

162. Guinier~ A.3 Compt. rend. 231~ 655=657 (1950), from "Structure Reports"

13~ 6 (1950).

163. Si1cock~ HealD and ·Hardy~ J. Inst. Metals 82~ 239-248 (1953-1954).

164. Hellner and Laves9

z.

l\laturforsch. 2a~ 177=183 (1947).

165. Scrn1bert~ Burkhardt~ Gunzel9 Wegst~ and Silkens~ Acta Cryst. 10, 776 (1957).

166. Raynor9 G. 9 Trans. Faraday So~ .. 44~ 15~28 (1948).

167. Hume~Rothe~9 Reynolds9 and Raynor~ J. Inst. Metals 66, 191-207 (1940).

168. Kubaschewski and Weibke~ Z. Elektrochem.

44,

870-877 (1938).

169. Kolm and l~atz9 Abstract 27 from the Program of the 15th Annual Pittsburgh

Diffraction Conference~ Joint Meeting with the American Crystallographic Association~ Mellon lnstitu.te ~ ?i ttsburgh~ Pa. (1957).

170. Schubert.., Breim.er9 Burkhardt9 GunzelS> Hauflerl> Lukas, Vetter, Wegst, and

Wilkens9 Naturwissenschaften 44~ 269~230 (1957).

171. Hahn and Frank~ Naturwissenschaften 44, 533~534 (1957).

172. Screaton and Ferguson~ Acta Cryst.

1

9 364-.365 (1954).

174.

Fink9 Jette~ K~tz~> and Scnnettler~ Trans. Electrochem. Soc. 88, 229-241

(1945) 0

175. Binnie~ W. 9 Acta Cryst. 2,9 686=68? (1956).

176. Makc:..rov9 E.9 see "Stru.cturc Reports" 119 h6-48 (1947-1948).

17'7. Sch11bert)) Dor!'e9 ai:.d Clunzelj) Naturwissenschaften 41, 448 (1954).

178. K1emn1 and Vogel» Z o a.ncrgo Chemo ~19 ~ .~5~.64 (1934) o

179o Sch:Llbert9 Dorre9 and Kluge9 'l. Metallku.nde 469 ~16-2~4 (1955).

180. Hahn and Klingler~ Z, anorg. Chern. ~609 9?-·109 (1949).

181. l-hhn. H.9 Angewo Chern. 64~ 203 (1952).

182. Inu.zuka and Sug:;.ike9 Proco Japan Acad. 301) 383-386 (1954).

183. Liu ru1d Peretti~ Trans. Am. Soc. Metals

44

9 539-545 (1952).

(33)

185.

Frost and Maskrey, J. Inst. Metals

82, 171-180 (1953-1954).

186.

Iandelli and Ferro, Ann. chim. (Rome)

42, 598-608

(195~).

187.

Graham and Raynor, Phil. Mag. ~' 1354-~363

(1957).

1

8

8.

Blade and Ellwood,,J. Inst . Metals

85, 30-32 (1

9 56-1957).

189.

Guttman,

L.,

Trans. Am. Inst. Mining Met. Engrs.

188, 1472-1477 (1950).

190.

Makarov, E., ~ristallografiya },

5-9 (1958),

52,

9707 (1958).

191.

Ito, Ogawa, Yanagase, Nippon Kinzoku Gakkai-$hi BlS,

382-384 (1951),

47 ,

12193 (1953).

192.

Zwicker,

U.,

Z. Metallkunde

41 ,

399-401 (1950).

193.

Goeddel and Yost, Phys. Rev.

82, 555 (1951).

;.;, . .'"/

194.

Valentiner, S., Z. Metallkunde

44,

259-260 (19S3):

'

195.

Khlapova, A., Khim. Redkikh Elementov, Akad. Nauk S.

s. s.

R.

1,

115-120

(1954),

49, 10183 (1955).

196.

Koster and Horn,

Z

.

Metallkunde

43, 333-334 (1952).

1

97.

Glazov, Mal'tsev, and Chistyakov, Izvest. Akad. Nauk S. S. ~. R •• , Otdel. Tekh. Nauk

1956 (4)

,

131-136 (1956),

from Metallurgical Abstracts

24,

697 (1957) . -

-198.

Hellner, E., Z. Metallkunde

41, 401-406 (1950).

199.

Makarov, E., see ''Structure Reports" _2, 90-9~

(1942-1944).

200.

Nowotny, H., Z. Metallkunde

34 ,

237-241 (1942).

201.

Moore, Graham, Williamson, and.Raynor, Acta Met. },

579-589 (1955).

202.

Tyzack and Raynor, Trans. Faraday Soc.

50, 675-684 (1954).

203.

Klemm, et. al.,

z.

anorg. Chern.

256, 242-248 (1947).

204.

Klemm and Klein, FIAT Rev. Ger. Sci., "Inorganic Chemistry," Pt. III,

(34)

PART III:· STRUCTURE DETAILS

A 2: 0~ --Im3m

A.=2: W struc::ture

with 2 W (Oh):

ooo

..

_-"222l..ll

Reported Compounds:

,d

_-Al.Cu3,

;2

_{-AUg3, InCu4}

Remarks: Implied in this structure is a random distribution of the

atomic species. on the lattice sites.

A. 3 ::

~h

--P63'/mmc

A=2: Mg structure

with 2 Mg (D3h): 2/3,1/3,0; 1/3,2/3,1/2

Reported Compounds: Alzlg3, InAu4

Remarks:· See Remarks under A Z structure •

.A.. 6:

nt;

--F4/mmm

A 12:

A

15:

A=4: In structure

w.ith 4 In

(rr

_{4h) :}· ooa~;:Ho;, ~

Reported Compounds-:· InPd3~

Remarks: See Remarks under A 2: structure.

T~--i43m

A=58: CX" -Mn structure

with 2 Mn (Td):.

8 Mn (CJv)t

24 Mn (Cs):

OOO+B. C.

xxx;Xix; ~;+B. c.: x~.32

xxz

;r0

;xxz ;;~ ;.ixz; ~ ;xi'i;;~;

.,.a.

c.::

x=o.36, z:-o.o4

["B.

C.

24 Mn (Cs)t the same with x:0.09, z*0.28

c add

ooa

and ~~! to all coord~nates~:permutation!l

Reported Compounds~ _Al12Mg17

3

Oh--Pm3n

A=8: _{cr3Si structure}

with 2 Si (Th) t

6

_{Cr (D2}d):.

Reported Compounds: AIMo3

OOO;ffi

(35)

B 2:

B 3:

B

4:

B 8:

1

Oh--Pm3m

A=2: ordered ;8 -brass or CsCl structure with 1 Cs (Oh): 000

I Cl (Oh): ~}}

Reported Compounds: AlNd, Allin, Alfe, AlCo, AlNi, Alr'd, AlOs, Allr,

AlRh, InPd, InRh, InNi

A~: Sphalerite structure, ZnS with 4 Zn (Td): 000

+F.

C.

4S (Td):

Ht+F.

c.

fF.

c.=

add 000;~~;2~; and 0~ to all coordinatei?

Reported Compounds: _{AlAu, AlAs, AlSb, InAs, InSb, In2Te}

₃

.

Remarks: Some metal sites in In2Te₃are statistically vacant.

4

C6v--P63mc

~4: Wurtzite structure, ZnS

with 2 Zn (c₃v): 1/3,2/3,0; 2/3,1/3,1/2

2 S (c₃v): l/3,2/3,z; 2/3,1/3,1/2+z: z~3/8

Reported Compounds: _Al2Se3

Rem~rks: . Cell content is 2LA12/Js~7: 2 Se (c

₃

Y): l/3,2/3,0; 2/3,1/3,1/2 and l l/3 Al (C3v7: l/3,2/3,z; c/J,l/3,l/2tz:

z~J/8. The selenium atoms lie in the h.c.p. positions; the aluminum atoms occupy 2/3 of the available tetrahedral spaces.

4

D6h""-P6₃/mmc

A:4: ~-NiAs structure with. 2 Ni (D3d):

2 As (D₃h):

4

D6h--P63/mmc

A=6: ~ _{-Ni2In structure}

with _{2 Ni (D3d):}

2 Ni ( D ) :

,2 In

(~~):

ooo•ool

' 2

1/3,2/3,1/4; 2/J,l/3,3/4

000·00.!.

' 2

l/3,2/3,3L4~ ~/3,1/3,1/4 1/3' 2/3' l/4t, 2/3 'l/3 ,3/4

Reported ComBounds: InCu2

Remarks: Between the types ex:. and ,13 there exist intermediate

(36)

B 10:

B 32:

B 35:

B 37:

c

1:

Dhh --P4/nmm

A 4: LiOH with

structure

2 Li _(D2d):

2 OH (c₄v):

OOO·Mo _. _'22

O.!.z • J!"'l-z •

2 '2V • z 0.20

Reported Compounds: InBi with z;0.393

A~8: FeSi structure

with 4 Fe (

c

_{3 ):}

4 Si (c_3):

1 l - r) 1)7

xxx; 2-tx, 2-x,x; J. : x--0. the same with x -0.158

Reported Compounds: AlPt with x~O.l52, x₁₁r-O.l55

O~--Fd3m

A~l6: NaTl structure

with 8 Na (Td):

8 Tl (T d):

000; ~~t+F. C.

1/2,1/2,1/2; 3/4,3/4,3/4~F. C.

Reported Compounds: AlLi; InLi, InNa

D1 --P6/mmm

6h

A-=6: CoSn

with 000

1/3,2/3,1/2; 2/3,1/3,1/2 ~0;0~;~~

Reported Compounds: InNi

18

lJ --14/mcm

4h

A~l6: TlSe structure

with

4

Tl (D4):

4

Tl (D_{2 ) :}

8 Se (c~:

0, 0, 1/4; 0, 0, 3/4 +-B. C.

1/2,0,1/4; 1/2,0,3/4+ B. C.

.w 1 .l - )

..:...\x,2+-x,O; 2-t-x,x,O +B. C.:

Reported Compounds: InTe with x=O.l8o

o

5

--l1'm3m

h

k-=12: fluorite structure, CaF2

with 4 ca (oh): ooo+ F.

c.

8 F (Td):

±(

~!!)-t-1!'. Cl.

~0.179 .

,

Reported Compounds: ~-Al₂Cu, _{Al2Au, Al2Pt, In2Au, In2Pt}

(37)

c

14:

c

15:

c

16:

c

32:

c

48:

4

u_{6h --P63/rnmc}

A=l2: MgZn2 structure--Laves phase

with

4

Mg (c_3v): ~l/J,2/3,z; l/3,2/3,1/2-z): z=0.062

2 Zn _(D3d): 000;00~

6 Zn (C₂) : :t(x,2x,t; 2X,x,t; x,x,%): x:::-0.170

Reported Compounds: _AlFe2

7

o

11--Fd3m

A=?.4: MgCu2 structure--Laves phase 8 ( ) l lJ '\ .,

with Mg T d : 000; 444 .,.-.1'. C •

16 Cu (D3d):

5/8,5/8,?/8;

7/8,7/8,5/8; 7/8,5/8,7/8; 5/8,7/8,7/81-F. C.

18

n_4h--I4/mcm

A=l2: CuAl2 structure

with

4

Cu ( n

_{4) :}

±( 00 ~) +-

B:

;

~.

_

.

8 Al (C2v): :!:(x,2+x,O, 2+x,x,O)+ B. C.: x=0.158

Reported Compounds: ~-Al2Cu with x=_{O.l60, A1Th2 with}~.162,

In2Ag with x=O.l58

1

n

_6h--P6/rnmm

A=-3: _AlB2

with 000

l/3,2/3,1/2; L/3,1/3,1/2

Reported-Compounds: _{A1B2, Al2Th, In2Bi}

Remarks: _{For In2Bi (176) reports}2 In and l Bi statistically distributed in (D_{61 ):}· OOO.flnd (D.lh): !(l/3,2/3,1/2);

~190) re~orts spacJ group D

6

h--P~(mmc, a~omic ~osltions 2 Bi

~n ~D3₀). t(l/3,2/3,1/4), 2 In ~n (D_{3d). 000,002, and 2}

In ~n tD_{3h): ±(l/3,2/3,3/4).}

D17 --I4/mmm

4h

A=6: _{Cr2Al structure} with 2 Al (D4h):

4 Cr (c₄v):

Reported Compounds: AlCr2

000+ B. C.

(38)

5

Oh--Fm3m

A=16: BiLi structure

with 34 Bi (Oh):

4

Li (Oh): 8 Li (Td):

OOO+F. C.

H

1 _{+F. C.}

±tiU) ..

F.

c.

Reported Compounds:

j3

1-A1Cu3, A1Fe3

D~h

_--P63/mmc

A=8:. _Ni3Sn structure

Wlth 2 s~ (n_3h):

6 N~ _{(C 2):} ±(1/3,2/3,1/4) x,2x,l/4; 2x,x,1/4; x,x,l/4; x,2x,3/4;

2x,x,J/4; ~,x,3/4: x•5/6

Reported Compounds: _{o<-A1Ce3 with x•0.829, AlTi2, InTi3,} InNi3

with x=0.84

16

D --Pnma _2h

A=16: NiA1 structure

with 34 Ni (C6 ): 4A1 (Cs):, 8 Al (C1):

!-(xi'z; i+x, ~h~-z): x= -0.131, z=-0.055

the same with x=0.011, z=0.415

t(xyz;

t+x,!-y,!-z; x,!-y,z; !+x,y,!-z):

x=0.174, y=0.053, z=0.856

Reported Compounds: Al3Ni

D1 7 --I4/mmm 4h

A=8: TiA1

with 3

17

n_4h--I4/mmm

structure 2 Ti (D ): 2 A1

<nh~):

4

A1 (D2d):

A=16: _ZrA13structure

with 4 Zr (c_4v):

4

A1 _{(D2 ):}

4 A1 (D

2

~):

4 A1

(c

₄

v):

Reported Compounds: A13Zr

z=0.122

(39)

D17 --I4/mmm 4h

A=lO ~ _{Ba.A.l4 structure} w~th 2 Ba (D

₄

h):

4 Al (C ):

4Al

(~~):

000+- B. C.

±(ooz)

+B.

c.:

o!t;~t+B.

c.

z=0.380

Reported Compounds: Al4Ca, Al

4

Sr, Al4Ba, Al4La, Al

4

Ce

3

D _{513 :} D_3d--CJm

A=5:. _{Ni 2Al3 structure}

w~th 1 Al (D_3d): 2 A~ (c₃v):

2 N~ (c₃v):

5

-D_3d--R3m

A~7: _{A14c3 structure} with 1 C (D₃d):

2 C (C ):

2 Al (c3v):

2 Al

(c~~):

•

000

l/3,2/3,z; 2/3,1/3,z: z=0.352 the same with z=O.l49

000

:!:(xxx): 'x=0.217

the same with x=0.293 the same with x:O.l28

Reported Compounds: Al

₄

_c3

9 3 - 1

-D 81_3: Oh--Im3m; Td--I43m; and Td~-P43m

A= 52: ~-brass structures. The basic structure consists of a cubic unit cell whose edge is three times the edge of a simple body-centered cubic cell. From this large cell of 54 atomic sites are abstracted 2 atomic sites with small attendant shifts in parameters of some of the 52 occupied sites. The space

(40)

L 10:

L 12:

c5 --R3m

3v

A=26: _{Cr5A18 structure}

x:x:x: x=0.097

xxz;

tJ2 :

x:: -0 .103, z-=0 .1o6

the same with x=0.170, z=-0.172

the same with x=O, 003, ZF-0. 352

XXX: X::: -0 .164

xxz; 1): x=0.006, z:::;-0.352

the same with x~0.291, z=O.OSB

the same with x=-0.32~, z=0.044

with 1 Cr (C_{3 ):}

3 Cr (Cv):

3 Cr (Cs): 3 Cr ( c~):

1 A1 (C_{3 ):}

3A1 (c~):

3 A1 (Cs):

3 A1 ( Cs):

6 A1 _{(C1 ):} xyz;

'R

;xzy; ~: x=D.330, y:=-0.297, z=-0.042

Reported Compounds: A18cr5

L/3,1/3,1/4; .1/3,~/3,3/4

!(x, 2x,

i;

2X,x,

t;

x"Xt): x=0.128

ooo·oo-1.

' 2

±(x,2x,

t

;

±(2x,x,z;

x,x,~+z):

~x,x,

t;

xxt):

r-o.467

x,2x,z; XxZ; 2x,x,~rz; x,2x,~z;

x=0.196, z=0.061

Reported Compounds: A15Co2

nth

--C4/mmm

A=4: CuAu

with

Reported Compounds: A1Ti

1

Oh--Pm3m

A=4: _Cu3Au structure

with 1 Au (Oh):

3 Cu (D₄h) g

000 + B. C.

(41)

.

'

1

-C. --P1

l.

A&15: _{A111Mn4 structure}

with 2 Mn (c_{1 ): :!:(xyz): :x=0.3926, y=0.1334,} z=0.3390

C~h-:-C2/m

2 Mn (C_{1 ):} the same with x=0.8590, y=0.4022, z=0.7099 1 A1 (C.): 000

2 A1 (C~): ~(xyz): x 0.5339, y=0.1226, z:0.8462 2 A1 (c_{1 ): the same with .x:=0.8911, y::0.1264, za0.49o6}

2 A1 (C1 ): the same with x-0.3420, y:0.3716, z=0.5778 2 A1 (C1 ): the same with x:0.7242, y:0.)714, z-0.1960 2 A1 (C_{1 ): the same with x=0.1869, y.0.3200, z:0.0574}

A=iJO: A13Fe structure

with 4 Fe (Cs): "!(xOz)+C. C.: x~.086, z-0.)83

J 4 Fe (Cs): the same with x=0.401, z 0.624

4 Fe (Cs): the same with x-=0.090, Z-'0. 989 4 Fe (C): · the same with x=0.400, z:=0.985

s ' +

8 Fe (C1 ): -(xyz;xyz)+C. C.: x=0.318, y=--0.285, z=0.277 4 A1 (Cs): ±(xOz)+C. C.: x•0.064, z-=0.173

4 x 0. 7 A1 (C ) :. the same with ~0.322, Z='-0. 277 4 A1 (Cs): the same with x-0.235, Z=-0.539 · 4 Al (C~): the same with x=0.081, z=0.582

4

A1 (Cs): the same with x:0.231, z=0.972 4 Al (Cs): the same with ~0.480, z=0.827 2 Al

(D2H:

~~;o~J

.

4 A1 (Cs): ±.(xOz)+ C. C.: :x;:::0.086, z•O. 781 4 A1 (C8 ): the same with :x:O.)lO, z•O. 769

8 A1 (C1 ): ·t(xyz;xyz)..,..C. C.: :x-0.188, y:.0.216, Z"'·0.111 8 Al (C1): the same with x•0.373, y:0.2l1, z:0.107

8Al (C1 ): the samewithx•O.l76, y:0.216, z•0.334

,

8

Al (C_{1 ):} the same w~th x.0.495, ys0.283, z•0.)29 8 _{A1 (C1): the}s:me Wl.t~ x•0.)66~ y:0.223, z~0.479 4 Al (C2) ~ OyO;OyO+ C. G.: ywO. 244

LC·

C.=add 000 and ~2~ to all coordinates.?

·.l•·•'·

-3 -Cs--Cm

A=Jo~ _{Al4W structure} w1.th 2 W (C8 ):

4

'W _{(C1 ):}

2 A1 (Cs): 2 A1 (Cs): 4 A1 (C1):

4 Al _{(C1 ):} 4 A1 _{(C1 ):} 4 A1 (C1 ):

4 Al (C1):

xOz·t·

c.

C.: x•O, z:.O

xyz ;:xYz 1-C. C. : x:.O .335 ,- y:O .13 'l, zsO .))1 xOz-r-C. C.: :x.O.l25, z::.0.491

the same with x~0.494, z~.129