ANTIFERROMAGNETIC LONG-RANGE ORDER CAUSED BY NONMAGNETIC IMPURITIES - MAGNETIZATION OF SINGLE-CRYSTAL CU1-XZNXGEO3

被引：105

作者：

HASE, M ^{[1
]}

KOIDE, N ^{[1
]}

MANABE, K ^{[1
]}

SASAGO, Y ^{[1
]}

UCHINOKURA, K ^{[1
]}

SAWA, A ^{[1
]}

机构：

[1] ELECTROTECH LAB,TSUKUBA,IBARAKI 305,JAPAN

来源：

PHYSICA B | 1995年 / 215卷 / 2-3期

关键词：

D O I：

10.1016/0921-4526(95)00405-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The magnetization was obtained as a function of temperature and magnetic field of a Cu1-xZnxGeO3 single-crystal with x similar to 0.04. The temperature dependence of the magnetic susceptibility in 0.1 T parallel to the c axis shows a clear cusp around 4.5 K and decreases rapidly below 4.5 K. There is no hysteresis between the data measured in zero-field-cooling and held-cooling processes, The field dependence of the magnetization parallel to the c axis at 2.0 K exhibits an apparent increase around 1.OT, which corresponds to a spin-flop transition. The temperature and held dependences, the anisotropy, and the absence of the hysteresis undoubtedly prove the occurrence of an antiferromagnetic long-range order below 4.5 K instead of the spin-glass-like transition reported previously. Spins below the transition temperature are ordered almost parallel to the c axis. This is the first report of magnetic long-range order caused by nonmagnetic impurities.

引用

页码：164 / 170

页数：7

共 8 条

[1] FAR-INFRARED ESR STUDY OF CUPRATE COMPOUNDS [J].