Abnormal magnetic behaviors induced by the antisite phase boundary in La_2NiMnO_6

作     者：赵月雷 柴一晟 潘礼庆 孙阳 

作者机构：Department of Physics University of Science and Technology Beijing Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences College of Science and Research Institute for New Energy China Three Gorges University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2013年第22卷第8期

页      面：221-224页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：supported by the National Key Basic Research Program of China(Grant No.2011CB921801) the National Natural Science Foundation of China(Grant Nos.11074293 and 51021061) 

主　　题：antisite phase boundary (APB) La2NiMnO6 electron spin resonance (ESR) 

摘      要：The ferromagnetic semiconductor La2NiMnO6 （LNMO） has recently received much attention due to its high Curie temperature （Tc 280 K）, which is close to room temperature. We prepared single-phase LNMO polycrystaUine samples and investigated the temperature- and field-dependent magnetic behaviors of bulk LNMO. Between Tc 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.