Effect of pressure on the magnetic and transport properties of the ferrimagnetic semiconductor FeCr2S4

被引:23
|
作者
Tsurkan, V [1 ]
Fita, I
Baran, M
Puzniak, R
Samusi, D
Szymczak, R
Szymczak, H
Klimm, S
Klemm, M
Horn, S
Tidecks, R
机构
[1] Moldavian Acad Sci, Inst Appl Phys, MD-2028 Chisinau, Moldova
[2] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
[3] Univ Augsburg, Inst Phys, D-86159 Augsburg, Germany
[4] Natl Acad Sci Ukraine, Donetsk Phys Tech Inst, UA-340114 Donetsk, Ukraine
关键词
D O I
10.1063/1.1380410
中图分类号
O59 [应用物理学];
学科分类号
摘要
The influence of hydrostatic pressure on magnetization, electrical conductivity and magnetoresistance of FeCr2S4 single crystals has been studied. Significant pressure influence on the temperature of a spin-glass like magnetization anomaly, dT(m)/dp approximate to 2.7 K/kbar, on the Curie temperature, dT(C)/dp approximate to0.9 K/kbar, as well as on the resistivity and magnetoresistance, was found. The negative magnetoresistance maximum at the Curie temperature is shifted under pressure towards higher temperatures. Pressure induced changes of the low field magnetoresistance and of the conductivity anomalies at T-m are correlated well with the changes in the magnetization. In the low temperature region the appearance of low symmetry anisotropy has been observed. This effect is distinctly enhanced by the hydrostatic pressure. The low symmetry component of magnetic anisotropy was suggested to be due to the static Jahn-Teller effect. (C) 2001 American Institute of Physics.
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页码:875 / 881
页数:7
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