書誌事項
- タイトル別名
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- Thermoelectric Properties of Quasicrystalline Approximant in Al–Cu–Ir System
- Al-Cu-Irケイ キンジ ケッショウ ノ ネツデントクセイ
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<p>Thermoelectric properties of a cubic quasicrystalline approximant in Al–Cu–Ir system were investigated experimentally and theoretically. A homogeneous sample with no secondary phase was synthesized using an arc-melting and a spark-plasma-sintering processes followed by heat treatment at 1173 K, and its thermoelectric properties were measured at temperatures between 373 K and 1023 K. Theoretical calculations of the thermoelectric properties were performed under three different approximations, i.e., constant-relaxation-time, constant-mean-free-path, and constant-diffusion-coefficient approximations, for the energy dependence of the relaxation time of the electrons. The experimental Seebeck coefficient was well reproduced, and physically acceptable lattice thermal conductivity was estimated only under constant-diffusion-coefficient approximation for the present material. Thermoelectric figure of merit zT of the present sample was lower than 0.1, and the maximum value of zT ≈ 0.3 achievable by electron doping was predicted by the theoretical calculation under the rigid-band approximation.</p>
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 82 (6), 188-196, 2018-06-01
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282763011649152
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- NII論文ID
- 130006744097
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 029092401
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可