Thermoelectric performance of Al-Pd-Mn quasicrystals: Comparison with (1/1,2/1-)AlPdMnSi approximants and improvement by Ga substitution for Al

Yoshiki Takagiwa; Takahiko Kamimura; Sizuka Hosoi; Junpei Tamura Okada; Kaoru Kimura

doi:10.1524/zkri.2009.1061

Thermoelectric performance of Al-Pd-Mn quasicrystals: Comparison with (1/1,2/1-)AlPdMnSi approximants and improvement by Ga substitution for Al

Yoshiki Takagiwa, Takahiko Kamimura, Sizuka Hosoi, Junpei Tamura Okada, Kaoru Kimura

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We report the thermoelectric properties of polygrain icosahedral Al-Pd-Mn quasicrystal and compare with those of (1/1, 2/1-)AlPdMnSi approximant crystals. To improve the dimensionless figure of merit (ZT), we substitute Ga for Al atoms in Al-Pd-Mn quasicrystal in accordance with the guiding principle of "weakly bonded rigid heavy clusters" (WBRHCs). Although the thermoelectric properties do not obey the WBRHCs principle, the maximum ZT increased by a factor of 1.4 from 0.18 for Al₇₁Pd₂₀Mn ₉ to 0.26 for Al₆₈Ga₃Pd₂₀Mn ₉ quasicrystal.

Original language	English
Pages (from-to)	21-25
Number of pages	5
Journal	Zeitschrift fur Kristallographie
Volume	224
Issue number	1-2
DOIs	https://doi.org/10.1524/zkri.2009.1061
Publication status	Published - 2009
Externally published	Yes

Keywords

Al-Pd-Mn - (Si)
Approximant crystals
Quasicrystals
Thermoelectric properties

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Inorganic Chemistry

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title = "Thermoelectric performance of Al-Pd-Mn quasicrystals: Comparison with (1/1,2/1-)AlPdMnSi approximants and improvement by Ga substitution for Al",

abstract = "We report the thermoelectric properties of polygrain icosahedral Al-Pd-Mn quasicrystal and compare with those of (1/1, 2/1-)AlPdMnSi approximant crystals. To improve the dimensionless figure of merit (ZT), we substitute Ga for Al atoms in Al-Pd-Mn quasicrystal in accordance with the guiding principle of {"}weakly bonded rigid heavy clusters{"} (WBRHCs). Although the thermoelectric properties do not obey the WBRHCs principle, the maximum ZT increased by a factor of 1.4 from 0.18 for Al71Pd20Mn 9 to 0.26 for Al68Ga3Pd20Mn 9 quasicrystal.",

keywords = "Al-Pd-Mn - (Si), Approximant crystals, Quasicrystals, Thermoelectric properties",

author = "Yoshiki Takagiwa and Takahiko Kamimura and Sizuka Hosoi and Okada, {Junpei Tamura} and Kaoru Kimura",

note = "Funding Information: Acknowledgments. EPMA measurement was performed using facilities of the Materials Design and Characterization Laboratory, Institute for Solid State Physics, the University of Tokyo. This work supported from Research Fellowships of the Japan Society for the Promotion of Science (JSPS), and is partly supported by a Grant-in-Aid for Scientific Research from JSPS and the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).",

year = "2009",

doi = "10.1524/zkri.2009.1061",

language = "English",

volume = "224",

pages = "21--25",

journal = "Zeitschfrift fur Kristallographie",

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publisher = "Walter de Gruyter GmbH",

number = "1-2",

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TY - JOUR

T1 - Thermoelectric performance of Al-Pd-Mn quasicrystals

T2 - Comparison with (1/1,2/1-)AlPdMnSi approximants and improvement by Ga substitution for Al

AU - Takagiwa, Yoshiki

AU - Kamimura, Takahiko

AU - Hosoi, Sizuka

AU - Okada, Junpei Tamura

AU - Kimura, Kaoru

N1 - Funding Information: Acknowledgments. EPMA measurement was performed using facilities of the Materials Design and Characterization Laboratory, Institute for Solid State Physics, the University of Tokyo. This work supported from Research Fellowships of the Japan Society for the Promotion of Science (JSPS), and is partly supported by a Grant-in-Aid for Scientific Research from JSPS and the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).

PY - 2009

Y1 - 2009

N2 - We report the thermoelectric properties of polygrain icosahedral Al-Pd-Mn quasicrystal and compare with those of (1/1, 2/1-)AlPdMnSi approximant crystals. To improve the dimensionless figure of merit (ZT), we substitute Ga for Al atoms in Al-Pd-Mn quasicrystal in accordance with the guiding principle of "weakly bonded rigid heavy clusters" (WBRHCs). Although the thermoelectric properties do not obey the WBRHCs principle, the maximum ZT increased by a factor of 1.4 from 0.18 for Al71Pd20Mn 9 to 0.26 for Al68Ga3Pd20Mn 9 quasicrystal.

AB - We report the thermoelectric properties of polygrain icosahedral Al-Pd-Mn quasicrystal and compare with those of (1/1, 2/1-)AlPdMnSi approximant crystals. To improve the dimensionless figure of merit (ZT), we substitute Ga for Al atoms in Al-Pd-Mn quasicrystal in accordance with the guiding principle of "weakly bonded rigid heavy clusters" (WBRHCs). Although the thermoelectric properties do not obey the WBRHCs principle, the maximum ZT increased by a factor of 1.4 from 0.18 for Al71Pd20Mn 9 to 0.26 for Al68Ga3Pd20Mn 9 quasicrystal.

KW - Al-Pd-Mn - (Si)

KW - Approximant crystals

KW - Quasicrystals

KW - Thermoelectric properties

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DO - 10.1524/zkri.2009.1061

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SN - 0044-2968

VL - 224

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JO - Zeitschfrift fur Kristallographie

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Thermoelectric performance of Al-Pd-Mn quasicrystals: Comparison with (1/1,2/1-)AlPdMnSi approximants and improvement by Ga substitution for Al

Abstract

Keywords

ASJC Scopus subject areas

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