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| PHYSICAL CHARACTERISTICS AND THEIR STUDY | |
| ArticleName | Changes of structural characteristics during heating of of Bi0,4Sb1,6Te3 solid solution |
| ArticleAuthor | K. V. Gochua |
| ArticleAuthorData | K. V. Gochua, National University of Science and Technology «MISiS». |
| Abstract | The aim of this study is to select a heating mode for which the growth of Bi0,4Sb1,6Te3 (p−type) grains would be insignificant, and the nanoscale size would be retained (particle size less than 100 nm) while obtaining mechanically tough bulk Bi0,4Sb1,6Te3 (p−type). I show that a complete dissolution of the excess tellurium occurs at 250 °C and above, and a spinodal decomposition takes place at temperatures of above 400 °C. |
| keywords | Bismuth telluride, thermoelectric properties, structure, figure of merit, excess tellurium, spinodal decomposition, pressing method. |
| References | 1. Sootsman, J. R. Strong reduction of thermal conductivity in nanostructured PbTe prepared by matrix encapsulation / J. R. Sootsman, R. J. Pcionek, H. Kong, C. Uher, M. G. Kanatzidis // Chem. of Mater. - 2006. - V. 18, N 21. - P. 4993—4995. 2. Gol'tsman, B. M. Poluprovodnikovye termoelektricheskie materialy na osnove Bi2Te3 / B. M. Gol'tsman, V. A. Kudinov, I. A. Smirnov - M. : Nauka, 1972. - 320 s. 3. Holopkin, A. I. Theoretical estimation of characteristics of thermoelectric materials made of nanopowders / A. I. Holopkin, V. N. Abrutin, V. A. Romanko, P. V. Miroevskiy, I. A. Zotov // Proc. 5th Europ. Conf. on Thermoelectrics. 2007. 4. Gusev, A. I. Attestatsiya nanokristallicheskikh materialov po razmeru chastits (zeren) / A. I. Gusev, A. S. Kurlov // Metallofizika i noveyshie tekhnologii. - 2008. - T. 30, № 5. - S. 679—694. 5. Gorelik, S. S. Rekristallizatsiya metallov i splavov / S. S. Gorelik, S. V. Dobatkin, L. M. Kaputkina - M. : Metallurgiya, 1967. - 432 s. |
| Language of full-text | russian |
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