期刊
APPLIED PHYSICS LETTERS
卷 96, 期 26, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3459141
关键词
ferromagnetic materials; magnetic semiconductors; magnetic susceptibility; nickel compounds; short-range order
资金
- National Science Foundation of China [10904135, 10874161]
- National Basic Research Program of China [2009CB939901]
Magnetic measurements of La2NiMnO6 reveal that its inverse susceptibility exhibits an upward derivation from Curie-Weiss behavior above T-C, indicating the presence of a short-range ferromagnetic ordered state. It is suggested that the upward derivation is due to antiferromagnetic interactions arising from anitisite defects, which is supported by the magnetic studies on the samples where the antiferromagnetic interactions are modulated by partially doping La with Sr or by decreasing the sample size. Basing on these results, we propose that the short-range ferromagnetic ordering is induced by antisite defects against long-range ferromagnetic ordering of the Ni/Mn sublattice. (C) 2010 American Institute of Physics. [doi:10.1063/1.3459141]
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