Crystal growth and spin reorientation transition in Sm0.4Er0.6FeO3 orthoferrite

被引：19
作者：
Zhao, Xiangyang [1 ,2 ]
Zhang, Kailin [3 ]
Xu, Kai [3 ]
Man, Peiwen [1 ,2 ]
Xie, Tao [4 ]
Wu, Anhua [1 ]
Ma, Guohong [3 ]
Cao, Shixun [3 ]
Su, Liangbi [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
[3] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
[4] Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 200235, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2016年 / 231卷
基金：
中国国家自然科学基金;
关键词：
Orthoferrite; Floating zone method; Spin reorientation transition; Terahertz time-domain spectroscopy;
D O I：
10.1016/j.ssc.2016.02.002
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
High quality Sm0.4Er0.6FeO3 single crystal has been successfully grown by the floating zone method. Temperature dependence of the magnetizations of Sm0.4Er0.6FeO3 under ZFC process is studied in the temperature range of 4-300 K. Spin reorientation transition between Gamma(2) (Gz, Fx) and Gamma(4) (Gx, Fz) is observed in the temperature range of 170-210 K, which is significantly lower than that of SmFeO3, while much higher than that of ErFeO3. A compensation point (35.8 K) corresponding to zero magnetization and a spontaneous magnetization reversal transition at 49.5 K are observed in Sm0.4Er0.6FeO3. Temperature -induced SRT of Sm0.4Er0.6FeO3 is systematically studied by THz-TDS range from 40 K to 300 K. The temperature dependence of amplitude of AFM mode coincides well with the magnetization measurement which demonstrate that SRT in Sm0.4Er0.6FeO3 can be studied through the amplitude of AFM mode FID emission. The AF mode frequency is almost invariant, while the F mode frequency significantly decreases with increasing temperature, which could be explained by the temperature dependence of anisotropy energy. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：43 / 47
页数：5
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