A cubic AuBe5-type YbCu5 phase with trivalent Yb ion

被引：32

作者：

He, J ^{[1
]}

Tsujii, N ^{[1
]}

Nakanishi, M ^{[1
]}

Yoshimura, K ^{[1
]}

Kosuge, K ^{[1
]}

机构：

[1] KYOTO UNIV,GRAD SCH SCI,DEPT CHEM,KYOTO 60601,JAPAN

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1996年 / 240卷 / 1-2期

关键词：

YbCu5; intermetallic; structure; susceptibility; valence state;

D O I：

10.1016/0925-8388(96)02884-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The cubic YbCu5 compound with the AuBe5-type structure was prepared for the first time under a pressure of 1.5 GPa and annealed at 650 degrees C. The previously reported hexagonal YbCu5 phase with the CaCu5-type structure was also confirmed to be stable under relatively lower pressure and at higher temperature. In contrast to the divalent non-magnetic state of Yb ion in the hexagonal phase, Yb ion in the cubic phase was found to be in the trivalent magnetic state. The cubic YbCu5 phase probably presents a reasonable conjunction for a family of isostructural YbCu(5-x)M(x) (M = In, Ag, etc.) compounds, both in crystallographic aspect and in physical properties.

引用

页码：261 / 265

页数：5

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