Bi/Sb distribution and its consequences in solid solution members of the thermoelectric materials K2Bi8-xSbxSe13

Theodora Kyratsi; Duck Young Chung; Mercouri G. Kanatzidis

doi:10.1016/S0925-8388(02)00211-6

Bi/Sb distribution and its consequences in solid solution members of the thermoelectric materials K₂Bi_8-xSb_xSe₁₃

Theodora Kyratsi, Duck Young Chung, Mercouri G. Kanatzidis

Northwestern University

Research output: Contribution to journal › Article

25 Citations (Scopus)

Abstract

In an effort to understand the nature of mass fluctuations introduced when β-K₂Bi₈Se₁₃ is alloyed with K₂Sb₈Se₁₃ we determined the detailed crystal structures of two solid solutions of the type K₂Bi_8-xSb_xSe₁₃ with x=4.0 and x=2.4. The structure is that of β-K₂Bi₈Se₁₃ which is a promising thermoelectric material with low thermal conductivity. The single crystal structures of K_1.49Bi_4.72Sb_3.79Se₁₃ and K_1.49Bi_5.55Sb_2.97Se₁₃ were determined and the Bi/Sb distribution in the structures was examined.

Original language	English
Pages (from-to)	36-42
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	338
Issue number	1-2 SPEC.
DOIs	https://doi.org/10.1016/S0925-8388(02)00211-6
Publication status	Published - May 16 2002

Keywords

Crystal structure
Thermoelectrics
X-ray diffraction

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/S0925-8388(02)00211-6

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Kyratsi, T., Chung, D. Y., & Kanatzidis, M. G. (2002). Bi/Sb distribution and its consequences in solid solution members of the thermoelectric materials K₂Bi_8-xSb_xSe₁₃. Journal of Alloys and Compounds, 338(1-2 SPEC.), 36-42. https://doi.org/10.1016/S0925-8388(02)00211-6

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AB - In an effort to understand the nature of mass fluctuations introduced when β-K2Bi8Se13 is alloyed with K2Sb8Se13 we determined the detailed crystal structures of two solid solutions of the type K2Bi8-xSbxSe13 with x=4.0 and x=2.4. The structure is that of β-K2Bi8Se13 which is a promising thermoelectric material with low thermal conductivity. The single crystal structures of K1.49Bi4.72Sb3.79Se13 and K1.49Bi5.55Sb2.97Se13 were determined and the Bi/Sb distribution in the structures was examined.

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