Effect of manganese substitution on magnetic states in metallic PdCoO2 single crystals

被引:3
作者
Hasegawa, M [1 ]
Tanaka, M
Takei, H
机构
[1] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 1068666, Japan
[2] Osaka Univ, Grad Sch Sci, Toyonaka, Osaka 5600043, Japan
关键词
spin glasses; crystal growth; exchange and superexchange;
D O I
10.1016/S0038-1098(98)00571-7
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Effects of manganese substitution on metallic PdCoO2 have been clarified using Pd(Co0.96Mn0.04)O-2 and Pd(Co0.89Mn0.11)O-2 single crystals. The valence state of Mn ions which replace Co ions are 3+ in high spin state. The crystals having 0.11 at% in magnetic Mn3+ ions show a large anisotropic hysteresis and dull cusp around 16 K in the magnetization-temperature curve in a low magnetic field. These also show residual magnetization at 5 K. Such results suggest a spin glass state of Pd(Co0.89Mn0.11)O-2 below about 16 K. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:477 / 482
页数:6
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