中国物理B ›› 2021, Vol. 30 ›› Issue (7): 77502-077502.doi: 10.1088/1674-1056/ac0786

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Magnetocrystalline anisotropy and dynamic spin reorientation of half-doped Nd0.5Pr0.5FeO3 single crystal

Haotian Zhai(翟浩天)1, Tian Gao(高湉)1,2,3,†, Xu Zheng(郑旭)1, Jiali Li(李佳丽)1, Bin Chen(陈斌)2, Hongliang Dong(董洪亮)2, Zhiqiang Chen(陈志强)2, Gang Zhao(赵钢)3, Shixun Cao(曹世勋)3, Chuanbing Cai(蔡传兵)3,‡, and Vyacheslav V. Marchenkov4,5   

  1. 1 Department of Physics, Shanghai University of Electric Power, Shanghai 200090, China;
    2 Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China;
    3 Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, China;
    4 M. N. Mikheev Institute of Metal Physics, Ekaterinburg 620108, Russia;
    5 Ural Federal University, Ekaterinburg 620002, Russia
  • 收稿日期:2021-03-12 修回日期:2021-04-06 接受日期:2021-06-03 出版日期:2021-06-22 发布日期:2021-07-02
  • 通讯作者: Tian Gao, Shixun Cao E-mail:gaotian@shiep.edu.cn;sxcao@shu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12074242 and 51862032), the Ministry of Science and Higher Education of Russia (theme “Spin” No. AAAA-A-18-118020290104-2), and the Government of the Russian Federation (Grant No. 02.A03.21.0006).

Magnetocrystalline anisotropy and dynamic spin reorientation of half-doped Nd0.5Pr0.5FeO3 single crystal

Haotian Zhai(翟浩天)1, Tian Gao(高湉)1,2,3,†, Xu Zheng(郑旭)1, Jiali Li(李佳丽)1, Bin Chen(陈斌)2, Hongliang Dong(董洪亮)2, Zhiqiang Chen(陈志强)2, Gang Zhao(赵钢)3, Shixun Cao(曹世勋)3, Chuanbing Cai(蔡传兵)3,‡, and Vyacheslav V. Marchenkov4,5   

  1. 1 Department of Physics, Shanghai University of Electric Power, Shanghai 200090, China;
    2 Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China;
    3 Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, China;
    4 M. N. Mikheev Institute of Metal Physics, Ekaterinburg 620108, Russia;
    5 Ural Federal University, Ekaterinburg 620002, Russia
  • Received:2021-03-12 Revised:2021-04-06 Accepted:2021-06-03 Online:2021-06-22 Published:2021-07-02
  • Contact: Tian Gao, Shixun Cao E-mail:gaotian@shiep.edu.cn;sxcao@shu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12074242 and 51862032), the Ministry of Science and Higher Education of Russia (theme “Spin” No. AAAA-A-18-118020290104-2), and the Government of the Russian Federation (Grant No. 02.A03.21.0006).

摘要: The single crystals of Nd$_{0.5}$Pr$_{0.5}$FeO$_{3}$ were successfully grown by optical floating zone method. Room temperature x-ray diffraction and Laue photograph declared the homogeneity and high quality of the crystal. The significant magnetic anisotropy and multiple magnetic transitions illustrate the complex magnetic structure. At high temperatures ($T > 66 $ K), it shows the typical characteristics of $\varGamma _{4}$(G$_{x}$, A$_{y}$, F$_{z}$) state. With the decrease of the temperature, it undergoes a first-order spin reorientation transition from $\varGamma _{4}$(G$_{x}$, A$_{y}$, F$_{z}$) to $\varGamma _{2}$(F$_{x}$, C$_{y}$, G$_{z}$) state in the temperature window of 45-66 K under an applied magnetic field of 0.01 T. As the temperature drops to $\sim 17 $ K, a new magnetic interaction mechanism works, which results in a further enhancement of magnetization. The ${T}$-$H$ phase diagram of Nd$_{0.5}$Pr$_{0.5}$FeO$_{3}$ single crystal was finally constructed.

关键词: rare earth orthoferrite, magnetocrystalline anisotropy, magnetic ordering, magnetic hysteresis

Abstract: The single crystals of Nd$_{0.5}$Pr$_{0.5}$FeO$_{3}$ were successfully grown by optical floating zone method. Room temperature x-ray diffraction and Laue photograph declared the homogeneity and high quality of the crystal. The significant magnetic anisotropy and multiple magnetic transitions illustrate the complex magnetic structure. At high temperatures ($T > 66 $ K), it shows the typical characteristics of $\varGamma _{4}$(G$_{x}$, A$_{y}$, F$_{z}$) state. With the decrease of the temperature, it undergoes a first-order spin reorientation transition from $\varGamma _{4}$(G$_{x}$, A$_{y}$, F$_{z}$) to $\varGamma _{2}$(F$_{x}$, C$_{y}$, G$_{z}$) state in the temperature window of 45-66 K under an applied magnetic field of 0.01 T. As the temperature drops to $\sim 17 $ K, a new magnetic interaction mechanism works, which results in a further enhancement of magnetization. The ${T}$-$H$ phase diagram of Nd$_{0.5}$Pr$_{0.5}$FeO$_{3}$ single crystal was finally constructed.

Key words: rare earth orthoferrite, magnetocrystalline anisotropy, magnetic ordering, magnetic hysteresis

中图分类号:  (Magnetic oxides)

  • 75.47.Lx
75.30.Gw (Magnetic anisotropy) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 61.50.-f (Structure of bulk crystals)