Crystal structure and magnetic properties of EuxSr6-xC60

被引：1
|
作者：
Ishii, K [1 ]
Ootoshi, H [1 ]
Nishi, Y [1 ]
Fujiwara, A [1 ]
Suematsu, H [1 ]
Kubozono, Y [1 ]
机构：
[1] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan
来源：
ELECTRONIC PROPERTIES OF NOVEL MATERIALS-MOLECULAR NANOSTRUCTURES | 2000年 / 544卷
关键词：
D O I：
10.1063/1.1342461
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Crystal structure and magnetic properties of EuxSr6-xC60 (x = 1, 3,6) were studied. They all have a bce structure which is an isostructure to other M6C60 (M is an alkali or alkaline earth metal). The lattice constants follow the Vegard's law, suggesting a formation of solid solution at x = 1 and 3. Magnetic measurements reveals all Eu atoms are in the divalent state with a magnetic moment of 7 mu (B) (S = 7/2), which is consistent with XANES experiments. Ferromagnetic correlation develops at low temperature in all three samples and seems to be caused the pi -f interaction through C-60 rather than the direct exchange interaction between Eu atoms.
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页码：29 / 32
页数：4
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