Ferromagnetism in a new dilute magnetic semiconductor Sb2-xCrxTe3

被引：15
|
作者：
Kulbachinskii, VA
Tarasov, PM
Brück, E
机构：
[1] Moscow MV Lomonosov State Univ, Low Temp Phys Dept, Moscow 119992, Russia
[2] Univ Amsterdam, Van der Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands
来源：
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2005年 / 101卷 / 03期
关键词：
D O I：
10.1134/1.2103222
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Magnetic and galvanomagnetic properties of single crystals of a new dilute magnetic semiconductor p-Sb2 - xCrxTe3 (x = 0, 0.0115, 0.0215) are investigated in a temperature range of 1.7-300 K. A ferromagnetic phase with a Curie temperature of T-C approximate to 5.8 (x = 0.0215) and 2.0 K (x = 0.0115) is detected. The easy magnetization axis is parallel to the C-3 crystallographic axis. Analysis of the Shubnikov-de Haas effect observed in these crystals in strong magnetic fields leads to the conclusion that the hole concentration decreases as a result of doping with Cr. Negative magnetoresistance and the anomalous Hall effect are observed in Cr-doped samples at liquid helium temperature. (c) 2005 Pleiades Publishing, Inc.
引用
收藏
页码：528 / 534
页数：7
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