tetragonal phase
Inference of oxygen vacancies in hydrothermal Na0 5Bi0 5TiO3
... the phase transition at ...the phase transitions, even in the absence of obvious peak ...a phase transition, in agreement with other ...this phase transition (Figure 1b), the overall change in ...
8
Martin, Marianne (2011): High-Temperature Superconductivity in Doped BaFe2As2. Dissertation, LMU München: Fakultät für Chemie und Pharmazie
... the tetragonal phase. The main structural effect of the phase transition, however, appears in the Fe–Fe distances, where four equal bonds of ...the tetragonal and orthorhombic phases are ...
159
PHASE STRUCTURE, DIELECTRIC AND PIEZOELECTRIC PROPERTIES OF MODIFIED-PZT CERAMICS NEAR THE MORPHOTROPIC PHASE BOUNDARY
... the tetragonal phase, respectively. Analysis of the relative phase fractions in the PZT–PMN–PNS ceramics indicates that the tetragonal and rhombohedral phases coexist in the composition range ...
9
Characterization and Phase Transformation of Spherical YSZ Powders Fabricated Via air Plasma Spray Method
... powders. Phase transformation that occurred in this process isn’t well ...and phase transformations via air plasma spray (APS) method. Phase analysis of powders was examined by XRD and the ...
7
Microstructure and wear behaviour of powder and suspension hybrid Al2O3–YSZ coatings
... the tetragonal phase to monoclinic can result in 3-4% volume expansion, resulting in excessive tensile residual stresses, however retaining the tetragonal phase via the stabilisation provided ...
21
Esterification of acetic acid with ethylene glycol over environmentally benign mixed oxide solid acid catalysts
... Incorporation of any promoter leads to formation of tetragonal phase but higher activity is observed for Mo promoted catalyst this may be probably due to higher acidity of this catalyst. Further studies are ...
5
Growth of nanolaminate structure of tetragonal zirconia by pulsed laser deposition
... strong tetragonal peaks and was evi- dent that there was no tetragonal to monoclinic phase ...only tetragonal phase after cooling down to ...
7
The effect of Sn VO defect clustering on Zr alloy corrosion
... {SnZr :VO }× is predicted to increase the tetragonal phase fraction in the oxide layer, due to the elevated oxygen vacancy concentration... As corrosion progresses, the transition to SnZ[r] ...
16
Isothermal Tetragonal to Monoclinic Phase Transformation in a Zirconia Yttria System
... the tetragonal phase becomes more unstable and that the driving force for the T ) M trans- formation at a given temperature becomes greater as the yttria content decreases, resulting in a high speed trans- ...
9
Thermal Cycle Resistance of Yttria Stabilized Zirconia Coatings Prepared by MO CVD
... the tetragonal phase is unstable and should have been transformed to the monoclinic phase at room ...the tetragonal phase. Garvie reported that the tetragonal phase became ...
6
Thermal stability and field assisted sintering of cerium-doped YSZ ceramic nanoparticles obtained via a hydrothermal process
... that the content of monoclinic zirconia is diminished becoming undetectable for sample doped with Ce, while the content of tetragonal phase is increasing. The XRD analysis of sintered pellets revealed that ...
7
Effect of Small Amount of Insoluble Dopant on Tetragonal to Monoclinic Phase Transformation in Tetragonal Zirconia Polycrystal
... a tetragonal to monoclinic transformation when the oxygen vacancy concentration is reduced to the extent that the tetragonal phase is no longer ...
5
The study of anomalies in the pzt material
... These results lead us to attribute the anomaly of the dielectric constant observed at 275 °C the transition of the morphotropic phase toward the tetragonal phase. This could be confirmed from the ...
5
Gupta_unc_0153M_19188.pdf
... The results from this study add to the existing body of evidence that 3Y zirconia is durable and able to withstand the normal forces of mastication. This is likely because of its excellent flexural strength plus the ...
49
Effect of Partial substitution of Ag on the Structural and Electrical Properties of High Temperature HgBa2Ca2Cu3O8+δ Superconductor
... 0.25, 0.3) were well established by X-ray diffraction analyses. Figure-I shows the X-ray diffraction patterns for samples which were prepared using solid state reaction. The positions and intensities of the diffraction ...
6
Monoclinic distortion, polarization rotation and piezoelectricity in the ferroelectric Na0 5Bi0 5TiO3
... We finally note the ongoing discussion of the true structural origin of the monoclinic phase in NBT. One suggestion is that the monoclinic symmetry can be mimicked by an adaptive phase mechanism (Jin et ...
11
Strain and vector magnetic field tuning of the anomalous phase in Sr3Ru2O7
... In the scenario where resistivity is directly linked to spin density wave formation, there are several possibilities for microscopic coexistence. The simplest is that the (100)- and (010)-oriented waves coexist within ...
10
A Critical Study of the Elastic Properties and Stability of Heusler Compounds: Phase Change and Tetragonal X2YZ Compounds
... mechanical instability, the determination of elastic constants is essential for applications of magnetic shape memory alloys. The elastic constants also provide valuable information on the structural stability, ...
31
Preparation and Microstructure of Acetate-based Lead-free BSZT Ferroelectric Thin Films Using Sol-gel Technique
... leading commercial material for actuators, sensors, and transducer devices due to its excellent piezoelectric properties in the vicinity of the morphotropic phase boundary (MPB) between the rhombohedral and ...
7
In situ investigations of the phase change behaviour of tungsten oxide nanostructures
... complex phase transitions and a temperature- and pressure-dependent phase transition ...their phase transformations. Chen et al. [15] studied the phase transition of WO 3 nanowires under ...
10