Inhomogeneous magnetic structures of La0.7Ca0.3MnO3 investigated by ESR and magnetization measurements

被引：0
|
作者：
Joh, KW [1 ]
Lee, CH [1 ]
Lee, CE [1 ]
Jeong, YH [1 ]
Hong, CS [1 ]
Hur, NH [1 ]
机构：
[1] Korea Univ, Dept Phys, Seoul 136701, South Korea
来源：
MAGNETORESISTIVE OXIDES AND RELATED MATERIALS | 2001年 / 602卷
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D O I：
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中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Comprehensive measurements of electron spin resonance and magnetization of La0.7Ca0.3MnO3 in the ferromagnetic as well as paramagnetic phases were carried out. From the quantitative analysis of the ESR signal, attributed to itinerant spins and localized spins in the bottleneck regime, evidences for the inhomogeneous nature of both phases, consisting of clusters of one phase embedded in the other, were found. It is suggested that the microscopic local magnetic structures above and below T-c are qualitatively similar except that the phase below T-c carries long range order.
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页码：159 / 166
页数：8
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