MAGNETISM IN THE RARE-EARTH CUPRATES R2CU2O5 (R=Y,HO,ER,YB,TM)

被引：1

作者：

GARCIAMUNOZ, JL ^{[1
]}

RODRIGUEZCARVAJAL, J ^{[1
]}

OBRADORS, X ^{[1
]}

机构：

[1] ICMAB, E-08193 BARCELONA, SPAIN

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1992年 / 104卷 / pt 1期

关键词：

Magnetic Materials - Metamagnetism - Magnetism - Structure - Magnetization - Rare Earth Compounds - Magnetic Field Effects;

D O I：

10.1016/0304-8853(92)90951-J

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic structures at 1.5 K of R2Cu2O5-type compounds appear to be commensurate having propagation vectors k = [0, 0, 0] for Y, Er and Tm, k = [0, 1/2, 0] for Ho and k = [0, 1/2,1/2] for Yb. In all cases, except for Yb, we found that both Cu and R sublattices order simultaneously. The magnetic moments for Cu sites show the same relative arrangement. The ordering of magnetic moments in the R sublattices differs strongly between the different compounds, indicating the existence of a strong competition between the crystal-field and the exchange interactions. From the magnetic structures determined we explain the metamagnetic-like transitions observed in the magnetization curves.

引用

页码：617 / 618

页数：2

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