Magnetic investigations of Cd1-xZnxTe (x=0.12, 0.21) wide-gap semiconductors

被引:7
作者
Shaldin, YV
Warchulska, I
Rabadanov, MK
Komar', VK
机构
[1] Russian Acad Sci, AV Shubnikov Crystallog Inst, Moscow 117333, Russia
[2] Int Lab High Magnet Fields & Low Temp, PL-53421 Wroclaw, Poland
[3] Natl Acad Sci Ukraine, NTK Inst Single Crystals, UA-61001 Kharkov, Ukraine
关键词
D O I
10.1134/1.1682329
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The results of measuring the magnetization M and magnetic susceptibility chi of Cd1 - xZnxTe crystals are presented. The hysteresis of the M(H) dependence, which is caused by the presence of arbitrarily oriented magnetic clusters, is observed in magnetic fields H < 2 kOe. Van Vlek paramagnetism, which is caused by electric fields of defects, makes a substantial contribution to the magnetic susceptibility. The anomalies in the chi(T) dependence in the temperature region T < 50 K are associated with variation in the charge state of interstitial Te for x = 0.12. For x = 0.21, these anomalies can be caused either by the paramagnetism of noninteracting defects or by antiferromagnetic ordering of the defect subsystem formed by Zn-Cd and Te-i. The effect of annealing on the magnetic state of a defect subsystem in the samples is ascertained. (C) 2004 MAIK "Nauka/Interperiodica".
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收藏
页码:288 / 292
页数:5
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