Bulk magnetic properties of La1-xCaxMnO3 (0≤x≤0.14):: Signatures of local ferromagnetic order -: art. no. 134402

被引：54
|
作者：
Terashita, H [1 ]
Neumeier, JJ [1 ]
机构：
[1] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA
来源：
PHYSICAL REVIEW B | 2005年 / 71卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.71.134402
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report the bulk magnetic properties of hole-doped La1-xCaxMnO3 (0 <= x <= 0.14) in the paramagnetic and antiferromagnetic regions; the Mn4+ concentration was determined with chemical analysis. Significant enhancement of the effective paramagnetic moment illustrates the existence of ferromagnetic clusters (polarons). The data reveal a distinct crossover in the paramagnetic region, signifying competition between ferromagnetic clusters and antiferromagnetic correlations associated with the low-temperature magnetically ordered state. The results suggest similarity in the magnetic properties at low temperatures between hole-doped LaMnO3 and electron-doped CaMnO3.
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页数：6
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