中国物理B ›› 2022, Vol. 31 ›› Issue (4): 46101-046101.doi: 10.1088/1674-1056/ac2b23

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Temperature-dependent structure and magnetization of YCrO3 compound

Qian Zhao(赵前)1,2,†, Ying-Hao Zhu(朱英浩)1,3,†, Si Wu(吴思)1,3, Jun-Chao Xia(夏俊超)1,3, Peng-Fei Zhou(周鹏飞)1, Kai-Tong Sun(孙楷橦)1, and Hai-Feng Li(李海峰)1,‡   

  1. 1 Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macao SAR 999078, China;
    2 State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;
    3 Guangdong-Hong Kong-Macao Joint Laboratory for Neutron Scattering Science and Technology, Dongguan 523803, China
  • 收稿日期:2021-08-23 修回日期:2021-09-24 接受日期:2021-09-29 出版日期:2022-03-16 发布日期:2022-03-21
  • 通讯作者: Hai-Feng Li E-mail:haifengli@um.edu.mo
  • 基金资助:
    Authors acknowledge the opening project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure (Grant No. SKL201907SIC), Science and Technology Development Fund, Macao SAR, China (File Nos. 0090/2021/A2 and 0051/2019/AFJ), Guangdong Basic and Applied Basic Research Foundation, China (Guangdong-Dongguan Joint Fund No. 2020B1515120025), University of Macau (MYRG2020-00278-IAPME and EF030/IAPMELHF/2021/GDSTIC), and Guangdong-Hong Kong-Macao Joint Laboratory for Neutron Scattering Science and Technology (Grant No. 2019B121205003).

Temperature-dependent structure and magnetization of YCrO3 compound

Qian Zhao(赵前)1,2,†, Ying-Hao Zhu(朱英浩)1,3,†, Si Wu(吴思)1,3, Jun-Chao Xia(夏俊超)1,3, Peng-Fei Zhou(周鹏飞)1, Kai-Tong Sun(孙楷橦)1, and Hai-Feng Li(李海峰)1,‡   

  1. 1 Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macao SAR 999078, China;
    2 State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;
    3 Guangdong-Hong Kong-Macao Joint Laboratory for Neutron Scattering Science and Technology, Dongguan 523803, China
  • Received:2021-08-23 Revised:2021-09-24 Accepted:2021-09-29 Online:2022-03-16 Published:2022-03-21
  • Contact: Hai-Feng Li E-mail:haifengli@um.edu.mo
  • Supported by:
    Authors acknowledge the opening project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure (Grant No. SKL201907SIC), Science and Technology Development Fund, Macao SAR, China (File Nos. 0090/2021/A2 and 0051/2019/AFJ), Guangdong Basic and Applied Basic Research Foundation, China (Guangdong-Dongguan Joint Fund No. 2020B1515120025), University of Macau (MYRG2020-00278-IAPME and EF030/IAPMELHF/2021/GDSTIC), and Guangdong-Hong Kong-Macao Joint Laboratory for Neutron Scattering Science and Technology (Grant No. 2019B121205003).

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摘要： We have grown a YCrO$_3$ single crystal by the floating-zone method and studied its temperature-dependent crystalline structure and magnetization by x-ray powder diffraction and PPMS DynaCool measurements. All diffraction patterns were well indexed by an orthorhombic structure with space group of $Pbnm$ (No. 62). From 36 K to 300 K, no structural phase transition occurs in the pulverized YCrO$_3$ single crystal. The antiferromagnetic phase transition temperature was determined as $T_\textrm{N} = 141.58(5)$ K by the magnetization versus temperature measurements. We found weak ferromagnetic behavior in the magnetic hysteresis loops below $T_\textrm{N}$. Especially, we demonstrated that the antiferromagnetism and weak ferromagnetism appear simultaneously upon cooling. The lattice parameters ($a$, $b$, $c$, and $V$) deviate downward from the Grüneisen law, displaying an anisotropic magnetostriction effect. We extracted temperature variation of the local distortion parameter $\varDelta$. Compared to the $\varDelta$ value of Cr ions, Y, O1, and O2 ions show one order of magnitude larger $\varDelta$ values indicative of much stronger local lattice distortions. Moreover, the calculated bond valence states of Y and O2 ions have obvious subduction charges.

关键词: orthochromates, x-ray powder diffraction, crystal structure, magnetization

Abstract: We have grown a YCrO$_3$ single crystal by the floating-zone method and studied its temperature-dependent crystalline structure and magnetization by x-ray powder diffraction and PPMS DynaCool measurements. All diffraction patterns were well indexed by an orthorhombic structure with space group of $Pbnm$ (No. 62). From 36 K to 300 K, no structural phase transition occurs in the pulverized YCrO$_3$ single crystal. The antiferromagnetic phase transition temperature was determined as $T_\textrm{N} = 141.58(5)$ K by the magnetization versus temperature measurements. We found weak ferromagnetic behavior in the magnetic hysteresis loops below $T_\textrm{N}$. Especially, we demonstrated that the antiferromagnetism and weak ferromagnetism appear simultaneously upon cooling. The lattice parameters ($a$, $b$, $c$, and $V$) deviate downward from the Grüneisen law, displaying an anisotropic magnetostriction effect. We extracted temperature variation of the local distortion parameter $\varDelta$. Compared to the $\varDelta$ value of Cr ions, Y, O1, and O2 ions show one order of magnitude larger $\varDelta$ values indicative of much stronger local lattice distortions. Moreover, the calculated bond valence states of Y and O2 ions have obvious subduction charges.

Key words: orthochromates, x-ray powder diffraction, crystal structure, magnetization

中图分类号:  (X-ray diffraction and scattering)

  • 61.05.C-
61.50.Ah (Theory of crystal structure, crystal symmetry; calculations and modeling) 75.50.-y (Studies of specific magnetic materials) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)