STRUCTURE AND ELECTRICAL-RESISTIVITY OF THE HEAVY-FERMION COMPOUND CECU5AU

被引：46

作者：

RUCK, M ^{[1
]}

PORTISCH, G ^{[1
]}

SCHLAGER, HG ^{[1
]}

SIECK, M ^{[1
]}

VONLOHNEYSEN, H ^{[1
]}

机构：

[1] UNIV KARLSRUHE,INST PHYS,D-76128 KARLSRUHE,GERMANY

来源：

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE | 1993年 / 49卷

关键词：

D O I：

10.1107/S0108768193005233

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The crystal structure of CeCu5Au determined at room temperature is orthorhombic with space group Pnma (No. 62). The lattice constants are a = 8.2455 (4), b = 5.0866 (3) and c = 10.3659 (5) angstrom with V = 434.76 (7) angstrom3 and four formula units per unit cell. Four-circle diffractometry shows that CeCU5Au is an ordered intermetallic phase, isomorphous with CeCu6, with the Au atoms exclusively occupying the Cu(2) positions of the CeCU6 structure. Measurements of the electrical resistivity of CeCu5Au at low temperatures yield a residual resistivity smaller than that of single crystals of CeCu5.5Au0.5 by a factor of four, in line with the fact that CeCU5Au is a stoichiometric compound. The temperature dependence of the resistivity indicates magnetic ordering as found previously for CeCu6-xAux with 0.1 < x < 1.

引用

页码：936 / 941

页数：6

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