Magnetorefractive effect in La0.7Ca0.3MnO3 in the infrared spectral range

被引：0
作者：
Yu. P. Sukhorukov
A. V. Telegin
A. B. Granovskii
E. A. Gan’shina
S. V. Naumov
N. V. Kostromitina
L. V. Elokhina
J. Gonzalez
机构：
[1] Russian Academy of Sciences,Institute of Metal Physics, Ural Division
[2] Moscow State University,Departamento Fisica de Materiales, Facultad de Quimica
[3] Universidad del Pais Vasco,undefined
来源：
Journal of Experimental and Theoretical Physics | 2010年 / 111卷
关键词：
Curie Temperature; Manganite; Kerr Effect; Colossal Magnetoresistance; Phonon Band;
D O I：
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学科分类号：
摘要：
The reflection and magnetic reflection spectra, magnetic resistance, electrical properties, and equatorial Kerr effect in La0.7Ca0.3MnO3 crystals have been complexly investigated. The measurements have been performed in wide temperature and spectral ranges in magnetic fields up to 3.5 kOe. It has been found that magnetic reflection is a high-frequency response in the infrared spectral range to the colossal magnetore-sistance near the Curie temperature. Correlation between the field and temperature dependences of the magnetic reflection and colossal magnetoresistance has been revealed. The previously developed theory of the magnetorefractive effect for metallic systems makes it possible to explain the experimental data at the qualitative level. Both demerits of the theory of the magnetorefractive effect in application to the magnets and possible additional mechanisms responsible for the magnetic reflection are discussed.
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页码：355 / 362
页数：7
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