Adaptability of AgSbTe2 to FGM

S. Yoneda; E. Ohta; Y. Shinohara; T. Kimura; I. A. Nishida; H. T. Kaibe

Adaptability of AgSbTe₂ to FGM

S. Yoneda, E. Ohta, Y. Shinohara, T. Kimura, I. A. Nishida, H. T. Kaibe

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

Thermoelectric properties of the unidirectionally grown p-type AgSbTe₂ and Ag_0.208Sb_0.275Te_0.517 boules have been evaluated to investigate adaptability of these materials system to functionally graded thermoelectric materials(FGMs). The AgSbTe₂ boule contained even more Ag₂Te precipitates than the Ag_0.208Sb_0.275Te_0.517. Thermoelectric properties for these boules showed the different temperature dependence, which were strongly affected by the transformation at 418 K and also 633 K. The Ag₂Te boule grown under similar condition as AgSbTe₂ and Ag_0.208Sb_0.275Te_0.517 is an n-type conductor. Thermoelectricmotive force E₀ of the p-type AgSbTe₂ boule is decreased by n-type Ag₂Te precipitates. P_max of Ag_0.208Sb_0.275Te_0.517 boule were four times as large as that of AgSbTe₂ at temperature difference ΔT=350 K, and also equaled that of the segmented Pb_1-xSn_xTe compound newly developed. High temperature phase of AgSbTe₂ above 633 K revealed its high potential of power generation. It is concluded that there is possibility of developing more superior thermoelectric materials by controlling structure and composition.

Original language	English
Pages (from-to)	731-735
Number of pages	5
Journal	Materials Science Forum
Volume	308-311
Publication status	Published - 1999 Jan 1
Event	Proceedings of the 1998 5th International Symposium on Functionally Graded Materials, FGM '98 - Dresden, Ger Duration: 1998 Oct 26 → 1998 Oct 29

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

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title = "Adaptability of AgSbTe2 to FGM",

abstract = "Thermoelectric properties of the unidirectionally grown p-type AgSbTe2 and Ag0.208Sb0.275Te0.517 boules have been evaluated to investigate adaptability of these materials system to functionally graded thermoelectric materials(FGMs). The AgSbTe2 boule contained even more Ag2Te precipitates than the Ag0.208Sb0.275Te0.517. Thermoelectric properties for these boules showed the different temperature dependence, which were strongly affected by the transformation at 418 K and also 633 K. The Ag2Te boule grown under similar condition as AgSbTe2 and Ag0.208Sb0.275Te0.517 is an n-type conductor. Thermoelectricmotive force E0 of the p-type AgSbTe2 boule is decreased by n-type Ag2Te precipitates. Pmax of Ag0.208Sb0.275Te0.517 boule were four times as large as that of AgSbTe2 at temperature difference ΔT=350 K, and also equaled that of the segmented Pb1-xSnxTe compound newly developed. High temperature phase of AgSbTe2 above 633 K revealed its high potential of power generation. It is concluded that there is possibility of developing more superior thermoelectric materials by controlling structure and composition.",

author = "S. Yoneda and E. Ohta and Y. Shinohara and T. Kimura and Nishida, {I. A.} and Kaibe, {H. T.}",

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TY - JOUR

T1 - Adaptability of AgSbTe2 to FGM

AU - Yoneda, S.

AU - Ohta, E.

AU - Shinohara, Y.

AU - Kimura, T.

AU - Nishida, I. A.

AU - Kaibe, H. T.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - Thermoelectric properties of the unidirectionally grown p-type AgSbTe2 and Ag0.208Sb0.275Te0.517 boules have been evaluated to investigate adaptability of these materials system to functionally graded thermoelectric materials(FGMs). The AgSbTe2 boule contained even more Ag2Te precipitates than the Ag0.208Sb0.275Te0.517. Thermoelectric properties for these boules showed the different temperature dependence, which were strongly affected by the transformation at 418 K and also 633 K. The Ag2Te boule grown under similar condition as AgSbTe2 and Ag0.208Sb0.275Te0.517 is an n-type conductor. Thermoelectricmotive force E0 of the p-type AgSbTe2 boule is decreased by n-type Ag2Te precipitates. Pmax of Ag0.208Sb0.275Te0.517 boule were four times as large as that of AgSbTe2 at temperature difference ΔT=350 K, and also equaled that of the segmented Pb1-xSnxTe compound newly developed. High temperature phase of AgSbTe2 above 633 K revealed its high potential of power generation. It is concluded that there is possibility of developing more superior thermoelectric materials by controlling structure and composition.

AB - Thermoelectric properties of the unidirectionally grown p-type AgSbTe2 and Ag0.208Sb0.275Te0.517 boules have been evaluated to investigate adaptability of these materials system to functionally graded thermoelectric materials(FGMs). The AgSbTe2 boule contained even more Ag2Te precipitates than the Ag0.208Sb0.275Te0.517. Thermoelectric properties for these boules showed the different temperature dependence, which were strongly affected by the transformation at 418 K and also 633 K. The Ag2Te boule grown under similar condition as AgSbTe2 and Ag0.208Sb0.275Te0.517 is an n-type conductor. Thermoelectricmotive force E0 of the p-type AgSbTe2 boule is decreased by n-type Ag2Te precipitates. Pmax of Ag0.208Sb0.275Te0.517 boule were four times as large as that of AgSbTe2 at temperature difference ΔT=350 K, and also equaled that of the segmented Pb1-xSnxTe compound newly developed. High temperature phase of AgSbTe2 above 633 K revealed its high potential of power generation. It is concluded that there is possibility of developing more superior thermoelectric materials by controlling structure and composition.

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VL - 308-311

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ER -

Adaptability of AgSbTe₂ to FGM

Abstract

ASJC Scopus subject areas

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