Improvement of thermoelectric properties of icosahedral AlPdRe quasicrystals by Fe substitution for Re

被引：23

作者：

Okada, Junpei T.

Hamamatsu, Takehito

Hosoi, Shizuka

Nagata, Tomohiro

Kimura, Kaoru

Kirihara, Kazuhiro

机构：

[1] Univ Tokyo, Dept Adv Mat Sci, Kashiwa, Chiba 2778561, Japan

[2] Natl Inst Adv Ind Sci & Technol, Nanoarchitecton Res Ctr, Tsukuba, Ibaraki 3058565, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 101卷 / 10期

关键词：

D O I：

10.1063/1.2716212

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The thermoelectric properties of quaternary icosahedral AlPdReFe quasicrystals obtained by replacing Re with Fe in icosahedral AlPdRe quasicrystals have been studied according to the guiding principle of weakly bonded rigid heavy clusters (WBRHCs). Anisotropy in the microstructures of arc-melted and annealed samples was found, and the electrical and thermal conductivities are larger in the direction perpendicular to the bottom of the arc-melted button than in the parallel case. The dimensionless figure of merit (ZT) in the perpendicular direction was increased 2.6 times from 0.08 to 0.21 by Fe substitution for Re in the icosahedral AlPdRe quasicrystals, which was caused by the increase of the Seebeck coefficient and the decrease of the phonon thermal conductivity, and the increase of the electrical conductivity, expected and not for the WBRHCs, respectively. (c) 2007 American Institute of Physics.

引用

页数：4

共 15 条

[1] TOWARD INSULATING QUASI-CRYSTALLINE ALLOY IN AL-PD-RE ICOSAHEDRAL PHASE [J].

AKIYAMA, H ;

HONDA, Y ;

HASHIMOTO, T ;

EDAGAWA, K ;

TAKEUCHI, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1993, 32 (7B) :L1003-L1004

[2] Evidence for variable range hopping conductivity in the ordered quasicrystal i-AlPdRe [J].

Delahaye, J ;

Brison, JP ;

Berger, C .

PHYSICAL REVIEW LETTERS, 1998, 81 (19) :4204-4207

[3] Electronic transport properties of quasicrystalline thin films [J].

Haberkern, R ;

Khedhri, K ;

Madel, C ;

Häussler, P .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 294 :475-480

[4]

KIMURA K, 1999, QUASICRYSTALS STATE, P325

[5]

Kimura K, 2006, MATER RES SOC SYMP P, V886, P231

[6] Covalent bonds and their crucial effects on pseudogap formation in α-Al(Mn,Re)Si icosahedral quasicrystalline approximant [J].

Kirihara, K ;

Nagata, T ;

Kimura, K ;

Kato, K ;

Takata, M ;

Nishibori, E ;

Sakata, M .

PHYSICAL REVIEW B, 2003, 68 (01)

[7] Composition dependence of thermoelectric properties of AlPdRe icosahedral quasicrystals [J].

Kirihara, K ;

Kimura, K .

JOURNAL OF APPLIED PHYSICS, 2002, 92 (02) :979-986

[8] Electron-density distribution of approximants of the icosahedral Al-based alloys by the maximum-entropy method and the Rietveld refinement [J].

Kirihara, K ;

Nakata, T ;

Takata, M ;

Kubota, Y ;

Nishibori, E ;

Kimura, K ;

Sakata, M .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 294 :492-495

[9]

Kirihara K, 2001, PHYS REV B, V64, DOI [10.1103/PhysRevB.64.212201, 10.1103/PhysRevLett.87.212201]

[10] Theoretical prospective of quasicrystals as thermoelectric materials -: art. no. 094206 [J].

Maciá, E .

PHYSICAL REVIEW B, 2001, 64 (09)

← 1 2 →