Tungsten bronze
Facile fabrication of high efficiency near infrared absorption film with tungsten bronze nanoparticle dense layer
... Tungsten bronze nanoparticles such as tungsten trioxide doped with alkali metals have selective optical absorption properties in the near-infrared region, leading to the synthesis of various ...
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The Structure and Thermoelectric Properties of Tungsten Bronze Ba6Ti2Nb8O30
... The electrical conductivity of the Ar annealed SPS samples as a function of temperature is presented in Fig. 11(a). Both BTN-SPS-A12 and BTN-SPS-A24 show semiconductor conduction behavior from 350 K to ∼723 K. At higher ...
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Quantum critical points in ferroelectric relaxors : stuffed tungsten bronze K3Li2Ta5O15 and lead pyrochlore (Pb2Nb2O7)
... To conclude, the tetragonal tungsten bronze-type structure of KLT has a room temperature structure that depends on the synthesis conditions. With lower partial pressures of K and Li giving lower K content, ...
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Microstructural and high temperature impedance spectroscopy study of Ba6MNb9O30 (M=Ga, Sc, In) relaxor dielectric ceramics with tetragonal tungsten bronze structure
... Conclusions A family of relaxor dielectrics with the tetragonal tungsten bronze structure nominal composition Ba6M3+Nb9O30, M3+ = Ga, Sc or In was studied using scanning electron microsc[r] ...
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The structure and thermoelectric properties of tungsten bronze Ba6Ti2Nb8O30
... ∼0.14 at 873 K. With the same annealing time, BTN-SPS-A12 exhibits slightly lower ZT values than BTN-A12, but the longer annealing time allows BTN-SPS-A24 to achieve similar ZT values to BTN-A12. In e ff ect, the power ...
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Electronic specific heat of sodium tungsten bronze
... Electronic specific heat and Debye temperature of' sodium tungsten bronze... approximat i on to t he data for all five samples..[r] ...
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Effect of local A site strain on dipole stability in A6GaNb9O30 (A = Ba, Sr, Ca) tetragonal tungsten bronze relaxor dielectrics
... tetragonal tungsten bronze (TTB) structure viewed down the c -axis (B1 octahedra are shown in light green, B2 octahedra in dark blue, with A1 and A2 cations represented by dark red and light green spheres, ...
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Tungsten Bronze Barium Neodymium Titanate (Ba 6–3 Nd 8+2 Ti 18 O 54 ): An Intrinsic Nanostructured Material and Its Defect Distribution
... the tungsten-bronze framework the two pentagonal channels were fully occupied by Ba; the remaining Ba atoms were assumed to share the tetragonal channels with ...54 Tungsten Bronze Barium ...
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Structural, electrical and relaxor properties of Sc In solid solution in tetragonal tungsten bronze ceramics
... tetragonal tungsten bronze (TTB) aristotype structure – viewed down the c-axis – and detailed information regarding the occupation possibilities for the five different TTB sites, may be found in several ...
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Vogel Fulcher analysis of relaxor dielectrics with the tetragonal tungsten bronze structure : Ba6MNb9O30 (M = Ga, Sc, In)
... Figure 9 Vogel-Fulcher representation of the dielectric permittivity data for all three Ba6M3+Nb9O30 analogues M = Ga, Sc, In over a limited frequency range a, and Vogel-Fulcher restrict[r] ...
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Hollow Sodium Tungsten Bronze (Na0 15WO3) Nanospheres: Preparation, Characterization, and Their Adsorption Properties
... formation of hollow structures via solid substance as the reactant as well as the ‘‘hard template’’ [3, 26, 27]. More recently, a gas–liquid interface aggregation mechanism was introduced to interpret the formation of ...
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Study of Structural and Dielectrical Properties of Lead Free Polycrystalline Electro Ceramics Ba5CaTi2Nb8O30 (BCTN) for Microwave Tunable Device Applications
... The observed X-ray diffraction pattern for the synthesized BCTN ceramic is shown in Figure 1. The peak position and relative intensity of all diffraction peak are observed to be matching well with the standard powder ...
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Abstracts of current literature on the platinum metals and their alloys25-32
... The mechanism of Ha oxidation on platinised lower tungsten oxide (WO,, where 2 t y < 3 ) electrodes is explained in terms of hydrogen tungsten bronze formation on [r] ...
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Soft Chemical Synthesis of Vanadium Oxide Nanostructures Using 3, 3’, 3” Nitrilotripropionic Acid ( NTP) as a Carrier
... Soft-Chemical Synthesis of Vanadium Oxide Nanostructures Using 3, 3’, 3”-Nitrilotripropionic Acid NTP as a Carrier Chemical Materials, Vol.. Yu, “Potassium Tungsten Bronze Nanowires: Pol[r] ...
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A Place of Burning: Hero or Ancestor Cult at Troy
... Late Bronze Age ...Late Bronze Age ...the Bronze Age cremation urns (or perhaps the cemetery had never been forgotten) and began ritual activity at the site of the old burial ...
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Effect of tungsten on growth, biochemical constituents, molybdenum and tungsten contents in wheat
... Heavy metal stress results in accumulation in reactive oxygen species. Reactive oxygen species (ROSs) are known to damage cellular membrane by inducing lipid peroxidation (Devi and Prasad 1998). It also can damage DNA, ...
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Corrosion Behavior of Aluminum Bronze under Thin Electrolyte Layers Containing Artificial Seawater
... Aluminum bronze is a kind of copper alloys that are usually made up of copper, aluminum and some other additional elements such as manganese, iron, and ...aluminum bronze is widely applied in transistor ...
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Abrasive wear failure analysis of tungsten carbide hard facing on carbon steel blade
... investigated. Tungsten carbide is one of the hard material that have a good properties to act as a protective coating layer on a component to increase wear ...Furthermore, Tungsten Carbide (WC) have a high ...
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Synthesis of Ultra Fine Titanium Tungsten Carbide Powder from Titanium Dioxide and Ammonium Metatungstate
... to tungsten almost disappeared in the diffraction pattern compared to other X-ray diffraction patterns below 1573 ...the tungsten carbide and/or tungsten dissolved into the carburized titanium ...
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Electron Impact Ionization Cross Sections of Tungsten Atoms and Tungsten Ions
... The tungsten (W) and tungsten based materials have been recommended as one of the materials to be used as plasma facing components for the International Thermonuclear Experimental Reactor (ITER) [1] and the ...
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