Results 141 to 150 of about 1,339 (186)

The Improvement of a Specific Material – Bismuth Telluride

2009
This chapter outlines the way in which the properties of the most important group of thermoelectric materials, those based on bismuth telluride, have improved with time. The properties of pure bismuth telluride are presented with attention being drawn to the anisotropy of the transport parameters.
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The performance of bismuth telluride thermojunctions

British Journal of Applied Physics, 1958
The thermoelectric properties of n-type and p-type bismuth telluride between 150 and 300° K have been measured and the figure of merit for thermoelectric applications has been calculated. This figure of merit has been shown to be highest for material with an electrical conductivity of about 1000 Ω-1 cm-1 with current flow parallel to the cleavage ...
H J Goldsmid, A R Sheard, D A Wright
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Bismuth-doped tin telluride

Journal of Applied Physics, 1987
By optimizing the growth conditions and doping with Bi, we have produced epitaxial layers of SnTe with hole concentration as low as 2.6×1018 cm−3. This is more than an order of magnitude less than the smallest carrier concentration reported for undoped bulk crystals (even with heat treatment to reduce the metal vacancy concentration). The hole mobility
M. A. Tamor, H. Holloway, R. M. Ager, C. A. Gierczak, R. O. Carter   +4 more
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Bismuth tellurides as gold scavengers

2005
Bi-Te melts have potential as Au scavengers in different types of gold deposits. Using phase equilibria, we define ‘melt-(precipitation) windows’ within which the Bi-Te scavenging mechanism can operate. Predicted assemblages correlate well with those in natural samples and can be applied in other cases to explain the distribution of telluride minerals ...
Cristiana L. Ciobanu, Nigel. J. Cook, Allan Pring   +2 more
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Intercalation of copper into bismuth telluride

Journal of Materials Science, 1992
The intercalation and leaching of copper into and out of bismuth telluride was investigated using aqueous and solid state electrochemical methods. It was found that copper intercalates up to a concentration of 3 mg/g bismuth telluride. Copper may also react with bismuth telluride to form copper telluride (Cu2Te).
J. B. Maclachlan, W. H. Kruesi, D. J. Fray   +2 more
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The Band Structure of Bismuth Telluride

Journal of the Physical Society of Japan, 1969
Calculations of the band structure of Bi 2 Te 3 are carried out by means of a pseudopotential approach. The pseudopotential used in the calculation is the model potential of Abarenkov, Animalu and Heine. The spin-orbit term is included from the start. The inclusion of the spin-orbit term serves to avoid band overlap throughout the Brillouin zone.
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The Magnetic Susceptibility of Bismuth Telluride

Proceedings of the Physical Society, 1959
Measurements of the susceptibility of Bi2 Te3 over the temperature range 100°K to 600°K, with magnetic field parallel (χparallel) and perpendicular (χperpendicular) to the c axis, are reported. Bi2 Te3 is diamagnetic and χparallel has the larger algebraic value.
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Preparation and Characterization of Nanomaterials of Tellurium, Bismuth, and Bismuth Telluride

Bulletin of the Chemical Society of Japan, 2007
Abstract In order to improve the processing and performance of tellurium (Te), bismuth (Bi), and bismuth telluride (dibismuth tritelluride, Bi2Te3), which are valuable thermoelectric materials that operate near room temperature in the bulk state, a nanometer scale synthetic method, in which the starting materials are reduced with NaBH4 ...
Norihisa Watanabe, Naoki Toshima
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Single Crystal Bismuth Telluride

Proceedings of the Physical Society. Section B, 1956
Bismuth telluride has been investigated because of its promise as a material for thermo-electric applications. Attempts have been made to grow single crystals of the material by the Stockbarger method, by directional freezing in a horizontal boat, and by pulling from the melt.
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Investigation of the Evaporation of Antimony and Bismuth Tellurides and of Bismuth Selenide

1972
Measurements were made of the saturation vapor pressure of solid antimony and bismuth tellurides and of bismuth selenide. It was found that the evaporation of these compounds was of a dissociative nature, in accordance with the following equations Open image in new window where X =Se, Te. The total vapor pressure satisfied the following equations: Open
Z. Boncheva-Mladenova, A. S. Pashinkin, A. V. Novoselova   +2 more
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