Abnormal magnetic behaviors induced by the antisite phase boundary in La2NiMnO6

被引：0

作者：

赵月雷 ^{[1
]}

柴一晟 ^{[2
]}

潘礼庆 ^{[3
]}

孙阳 ^{[2
]}

机构：

[1] Department of Physics, University of Science and Technology Beijing

[2] Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences

[3] College of Science and Research Institute for New Energy, China Three Gorges University

来源：

Chinese Physics B | 2013年 / 08期

基金：

中国国家自然科学基金;

关键词：

antisite phase boundary (APB); La; 2; NiMnO; 6; electron spin resonance (ESR);

D O I：

暂无

中图分类号：

O472.5 [];

学科分类号：

070205 ; 080501 ; 0809 ; 080903 ;

摘要：

The ferromagnetic semiconductor La 2 NiMnO 6 (LNMO) has recently received much attention due to its high Curie temperature (T C ～ 280 K), which is close to room temperature. We prepared single-phase LNMO polycrystalline samples and investigated the temperature- and field-dependent magnetic behaviors of bulk LNMO. Between T C and T*= 300 K, we observed upward and downward deviations from the Curie-Weiss law for high and low magnetic fields, respectively. From the electron spin resonance results, we can exclude the existence of the Griffiths phase. On the contrary, our results indicate that the abnormal magnetic behaviors might be induced by antisite phase boundaries with antiferromagnetic interaction.

引用

页码：225 / 228

页数：4

共 29 条

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