Synthesis of filled skutterudite compounds:: BayFexCo4-xSb12

被引：51

作者：

Chen, L ^{[1
]}

Tang, X ^{[1
]}

Goto, T ^{[1
]}

Hirai, T ^{[1
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF MATERIALS RESEARCH | 2000年 / 15卷 / 11期

关键词：

D O I：

10.1557/JMR.2000.0325

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ba-filled skutterudite compounds, BayFexCo4-xSb12, were synthesized by a two-step solid reaction method. A binary compound of Sb3Ba and a ternary compound of FexCo1-xSb2 were first synthesized at 900 and 973 K, respectively. The presynthesized Sb3Ba and FexCo1-xSb2 were then mixed with Sb and heated at 973 K in an Ar atmosphere. The resulting powder was of single phase with a composition of BayFexCo4-xSb12, having skutterudite structure with the Sb-dodecahedron voids fractionally filled by Ba. The lattice constant of BayFexCo4-xSb12 increased with Ba and Fe content. The maximum filling fraction of Ba (y(max)) in BayFexCo4-xSb12 was found to be greater than that of Ce or La in Ln(y)Fe(x)Co(4-x)Sb(12), especially in the lower Fe content region. The y(max) varied from 0.35 to near 1.0 when Fe content (x) changed from 0 to 4.

引用

页码：2276 / 2279

页数：4

共 15 条

[1] PREPARATION AND STRUCTURAL INVESTIGATIONS OF ANTI-MONIDES WITH THE LAFE4P12 STRUCTURE [J].

BRAUN, DJ ;

JEITSCHKO, W .

JOURNAL OF THE LESS-COMMON METALS, 1980, 72 (01) :147-156

[2] Disparate atomic displacements in skutterudite-type LaFe3CoSb12, a model for thermoelectric behavior [J].

Chakoumakos, BC ;

Sales, BC ;

Mandrus, D ;

Keppens, V .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 1999, 55 :341-347

[3] Low-temperature transport properties of the filled skutterudites CeFe4-xCoxSb12 [J].

Chen, BX ;

Xu, JH ;

Uher, C ;

Morelli, DT ;

Meisner, GP ;

Fleurial, JP ;

Caillat, T ;

Borshchevsky, A .

PHYSICAL REVIEW B, 1997, 55 (03) :1476-1480

[4] IMPORTANCE OF THE X4-RING ORBITALS FOR THE SEMICONDUCTING, METALLIC, OR SUPERCONDUCTING PROPERTIES OF SKUTTERUDITES MX3 AND RM4X12 [J].

JUNG, DW ;

WHANGBO, MH ;

ALVAREZ, S .

INORGANIC CHEMISTRY, 1990, 29 (12) :2252-2255

[5] Structure and lattice thermal conductivity of fractionally filled skutterudites: Solid solutions of fully filled and unfilled end members [J].

Meisner, GP ;

Morelli, DT ;

Hu, S ;

Yang, J ;

Uher, C .

PHYSICAL REVIEW LETTERS, 1998, 80 (16) :3551-3554

[6] Cerium filling and doping of cobalt triantimonide [J].

Morelli, DT ;

Meisner, GP ;

Chen, BX ;

Hu, SQ ;

Uher, C .

PHYSICAL REVIEW B, 1997, 56 (12) :7376-7383

[7] Effect of partial void filling on the lattice thermal conductivity of skudderudites [J].

Nolas, GS ;

Cohn, JL ;

Slack, GA .

PHYSICAL REVIEW B, 1998, 58 (01) :164-170

[8] The effect of rare-earth filling on the lattice thermal conductivity of skutterudites [J].

Nolas, GS ;

Slack, GA ;

Morelli, DT ;

Tritt, TM ;

Ehrlich, AC .

JOURNAL OF APPLIED PHYSICS, 1996, 79 (08) :4002-4008

[9] Filled skutterudite antimonides: Electron crystals and phonon glasses [J].

Sales, BC ;

Mandrus, D ;

Chakoumakos, BC ;

Keppens, V ;

Thompson, JR .

PHYSICAL REVIEW B, 1997, 56 (23) :15081-15089

[10] Atomic displacement parameters and the lattice thermal conductivity of clathrate-like thermoelectric compounds [J].

Sales, BC ;

Chakoumakos, BC ;

Mandrus, D ;

Sharp, JW .

JOURNAL OF SOLID STATE CHEMISTRY, 1999, 146 (02) :528-532

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