Magnetic behaviour of RRhAl (R = La, Ce, Pr, Nd and Gd) compounds

被引：11

作者：

Kumar, NH ^{[1
]}

Malik, SK ^{[1
]}

机构：

[1] Tata Inst Fundamental Res, Mumbai 400005, India

来源：

SOLID STATE COMMUNICATIONS | 2000年 / 114卷 / 04期

关键词：

magnetically ordered materials; superconductors; valence fluctuations;

D O I：

10.1016/S0038-1098(00)00034-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Magnetization and electrical resistivity measurements have been carried out on ternary intermetallic compounds of the formula RRhAl (R = La, Ce, Pr, Nd and Gd). These compounds with R = La and Ce crystallize in the orthorhombic Pd-2(MnPd)Ge-2 type structure while those with R = Pr, Nd and Gd crystallize in the orthorhombic TiNiSi type structure, all in the space group Pnma. The compound LaRhAl exhibits superconductivity below 2.4 K while PrRhAl, NdRhAl and GdRhAl are ferromagnetically ordered with Curie temperatures of about 5, 10 and 30 K, respectively. The compound CeRhAl shows mixed valent behaviour of the Ce ions and is neither magnetically ordered nor superconducting down to 1.7 K. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：223 / 226

页数：4

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