SPIN-FLOP PHASE AND EFFECT OF CE4+ AND ND3+ DOPING IN GD2CUO4

被引：8

作者：

JARDIM, RF

WESTPHAL, CH

BECERRA, CC

PADUAN, A

机构：

[1] Instituto de Física, Universidade de so Paulo, 01498, So Paulo

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.45.10485

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic-susceptibility measurements as a function of temperature and magnetic field were performed in polycrystalline samples of Gd2CUO4, Gd1.85Ce0.15CUO4, and Gd1.8Nd0.2CUO4. The previously observed anomaly in the magnetic susceptibility of Gd2CuO4, at 20 K associated with the possible existence of weak ferromagnetic behavior was found to be strongly suppressed by Ce4+ and Nd3+ doping. Below 6.8 K the susceptibility of Gd2CUO4 is almost field independent above a few kilo-oersted, up to at least 40 kOe, suggesting the occurrence of a spin-flop phase. An exchange field of 35 kOe and an anisotropy field of 20 Oe were obtained.

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页码：10485 / 10489

页数：5

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