Metastable magnetic behavior in La_(0.9)Tb_(0.1)MnO_3

作     者：Wei-Bin Liu Ying-Tang Zhang Zi-Yu Chen Li-Zhu Liu Sheng-Tao Li Tao-Tao Ai 

作者机构：Department of PhysicsBeijing University of Aeronautics and Astronautics School of Material Science and EngineeringInstitute of Functional MaterialShaanxi University of Technology Key Laboratory of Engineering Dielectrics and Its ApplicationMinistry of EducationHarbin University of Science and Technology State Key Laboratory of Electrical Insulation and Power EquipmentXi'an Jiaotong University 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2017年第36卷第7期

页      面：596-600页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：supported by the Special Program for State Key Laboratory of Electrical Insulation and Power Equipment(No.EIPE11207) the Special Program for State Key Laboratory Breeding Base of Dielectrics Engineering(No.DE2011A01) the Special Program for Education Bureau of Province(No.12JK0953) the National Natural Science Foundation of China(No.51201094) 

主　　题：La0.9Tb0.1MnO3 Relaxation behavior Metastability 

摘      要：The linear and nonlinear magnetizations of La0.9Tb0.1MnO3 at low temperatures were reported in de- tail. The temperature dependence of magnetization shows peaks at 50, 100 and 150 K, respectively. When LaMnO3 is Tb-doped, its magnetic structure exhibits a canted an- tiparallel spin order. This is different from classical antiferromagnetic （AFM） in which the relaxation behavior takes place at about 150 K. At 50 K, Tb-doped LaMnO3 exhibits canonical spin glass behavior, arising from the competition of exchange and super-exchange between spins. The peak at 100 K shows neither spin glass behavior nor canted AFM behavior. Its peak value increases with frequency increasing, and the transition temperature of the peak shifts to higher temperatures with frequency increasing. The study of aging behavior at 100 K shows a periodical variable metastability, which is ascribed to the competition between ferromagnetic （FM）-, AFM- and sinusoidal-order interactions. This work should shed a light on understanding the complex magnetic structure of the perovskite oxides.