中国物理B ›› 2020, Vol. 29 ›› Issue (5): 57503-057503.doi: 10.1088/1674-1056/ab8200

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Low temperature magnetism in the rare-earth perovskite GdScO3

Jie-Ming Sheng(盛洁明), Xu-Cai Kan(阚绪材), Han Ge(葛晗), Pei-Qian Yuan(袁培骞), Lei Zhang(张磊), Nan Zhao(赵南), Zong-Mei Song(宋宗美), Yuan-Yin Yao(姚远寅), Ji-Ning Tang(唐霁宁), Shan-Min Wang(王善民), Ming-Liang Tian(田明亮), Xin Tong(童欣), Liu-Suo Wu(吴留锁)   

  1. 1 Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China;
    2 Institute of High Energy Physics, Chinese Academy of Sciences(CAS), Beijing 100049, China;
    3 Spallation Neutron Source Science Center, Dongguan 523803, China;
    4 School of Physics and Materials Science, Anhui University, Hefei 230601, China;
    5 High Magnetic Field Laboratory, Chinese Academy of Science(CAS), Hefei 230031, China
  • 收稿日期:2020-01-02 修回日期:2020-03-16 出版日期:2020-05-05 发布日期:2020-05-05
  • 通讯作者: Xin Tong, Liu-Suo Wu E-mail:tongx@ihep.ac.cn;wuls@sustech.edu.cn
  • 基金资助:
    The work at SUSTech was supported by the National Natural Science Foundation of China (Grant No. 11974157). Part of this work was also supported by the National Natural Science Foundation of China (Grant No. 11875265), the Scientific Instrument Developing Project of the Chinese Academy of Sciences (3He-based neutron polarization devices), and the Institute of High Energy Physics, the Chinese Academy of Sciences. Kan X C and Tian M L were supported by the National Natural Science Foundation of China (Grant No. 51802002).

Low temperature magnetism in the rare-earth perovskite GdScO3

Jie-Ming Sheng(盛洁明)1,2,3, Xu-Cai Kan(阚绪材)4, Han Ge(葛晗)1, Pei-Qian Yuan(袁培骞)1, Lei Zhang(张磊)1, Nan Zhao(赵南)1, Zong-Mei Song(宋宗美)1, Yuan-Yin Yao(姚远寅)1, Ji-Ning Tang(唐霁宁)1, Shan-Min Wang(王善民)1, Ming-Liang Tian(田明亮)4,5, Xin Tong(童欣)2,3, Liu-Suo Wu(吴留锁)1   

  1. 1 Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China;
    2 Institute of High Energy Physics, Chinese Academy of Sciences(CAS), Beijing 100049, China;
    3 Spallation Neutron Source Science Center, Dongguan 523803, China;
    4 School of Physics and Materials Science, Anhui University, Hefei 230601, China;
    5 High Magnetic Field Laboratory, Chinese Academy of Science(CAS), Hefei 230031, China
  • Received:2020-01-02 Revised:2020-03-16 Online:2020-05-05 Published:2020-05-05
  • Contact: Xin Tong, Liu-Suo Wu E-mail:tongx@ihep.ac.cn;wuls@sustech.edu.cn
  • Supported by:
    The work at SUSTech was supported by the National Natural Science Foundation of China (Grant No. 11974157). Part of this work was also supported by the National Natural Science Foundation of China (Grant No. 11875265), the Scientific Instrument Developing Project of the Chinese Academy of Sciences (3He-based neutron polarization devices), and the Institute of High Energy Physics, the Chinese Academy of Sciences. Kan X C and Tian M L were supported by the National Natural Science Foundation of China (Grant No. 51802002).

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摘要： The magnetic phase diagram of rare-earth perovskite compound, GdScO3, has been investigated by magnetization and heat capacity. The system undergoes an antiferromagnetic phase transition at TN=2.6 K, with an easy axis of magnetization along the a axis. The magnetization measurements show that it exists a spin-flop transition around 0.3 T for the applied field along the a axis. The critical magnetic field for the antiferromagnetic-to-paramagnetic transition is near 3.2 T when temperature approaches zero. By scaling susceptibilities, we presume this point (B=3.2 T, T=0 K) might be a field-induced quantum critical point and the magnetic critical fluctuations can even be felt above TN.

关键词: rare-earth perovskite, magnetization, spin-flop transition, quantum critical point

Abstract: The magnetic phase diagram of rare-earth perovskite compound, GdScO3, has been investigated by magnetization and heat capacity. The system undergoes an antiferromagnetic phase transition at TN=2.6 K, with an easy axis of magnetization along the a axis. The magnetization measurements show that it exists a spin-flop transition around 0.3 T for the applied field along the a axis. The critical magnetic field for the antiferromagnetic-to-paramagnetic transition is near 3.2 T when temperature approaches zero. By scaling susceptibilities, we presume this point (B=3.2 T, T=0 K) might be a field-induced quantum critical point and the magnetic critical fluctuations can even be felt above TN.

Key words: rare-earth perovskite, magnetization, spin-flop transition, quantum critical point

中图分类号:  (Magnetic oxides)

  • 75.47.Lx
75.50.Ee (Antiferromagnetics) 75.40.-s (Critical-point effects, specific heats, short-range order) 75.40.Cx (Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))