Thermoelectric properties of La-doped Ca-Co-O misfit cobaltites

被引：33

作者：

Nan, J ^{[1
]}

Wu, J ^{[1
]}

Deng, Y ^{[1
]}

Nan, CW ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2002年 / 124卷 / 07期

基金：

中国国家自然科学基金;

关键词：

semiconductors; chemical synthesis; electronic transport;

D O I：

10.1016/S0038-1098(02)00555-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The sol-gel method followed by a hot-pressing sintering procedure was applied to synthesize the misfit layered cobaltite with lanthantum addition. The electrical conductivity and Seebeck coefficient of all the samples were measured from 473 to 973 K. The values of both properties increase with the rising temperature. La dopant amount has a remarkable effect oil electrical transport properties. The result,., imply the promising way to enhance the thermoelectric properties of the layered cobaltite oxides by optimizing its composition and microstructure. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：243 / 246

页数：4

共 14 条

[1] Effect of porosity on the thermal-electric properties of Al-doped SiC ceramics [J].

Cai, KF ;

Liu, JP ;

Nan, CW ;

Min, XM .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1997, 16 (22) :1876-1878

[2] CsBi4Te6:: A high-performance thermoelectric material for low-temperature applications [J].

Chung, DY ;

Hogan, T ;

Brazis, P ;

Rocci-Lane, M ;

Kannewurf, C ;

Bastea, M ;

Uher, C ;

Kanatzidis, MG .

SCIENCE, 2000, 287 (5455) :1024-1027

[3] Glasslike heat conduction in high-mobility crystalline semiconductors [J].

Cohn, JL ;

Nolas, GS ;

Fessatidis, V ;

Metcalf, TH ;

Slack, GA .

PHYSICAL REVIEW LETTERS, 1999, 82 (04) :779-782

[4] Thermoelectric properties of Bi2Sr2Co2Ox polycrystalline materials [J].

Funahashi, R ;

Matsubara, I ;

Sodeoka, S .

APPLIED PHYSICS LETTERS, 2000, 76 (17) :2385-2387

[5]

HEBERT S, 2001, PHYS REV B, V64

[6] Misfit-layered cobaltite with an anisotropic giant magnetoresistance:: Ca3Co4O9 [J].

Masset, AC ;

Michel, C ;

Maignan, A ;

Hervieu, M ;

Toulemonde, O ;

Studer, F ;

Raveau, B ;

Hejtmanek, J .

PHYSICAL REVIEW B, 2000, 62 (01) :166-175

[7]

Nan CW, 2001, TWENTIETH INTERNATIONAL CONFERENCE ON THERMOELECTRICS, PROCEEDINGS, P18, DOI 10.1109/ICT.2001.979610

[8]

NAN J, 2002, IN PRESS J EUR CERAM, P22

[9]

Rama V., 2001, NATURE, V413, P597

[10] Filled skutterudite antimonides: A new class of thermoelectric materials [J].

Sales, BC ;

Mandrus, D ;

Williams, RK .

SCIENCE, 1996, 272 (5266) :1325-1328

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