中国物理B ›› 2014, Vol. 23 ›› Issue (4): 46105-046105.doi: 10.1088/1674-1056/23/4/046105

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Doping effects on structural and magnetic evolutions of orthoferrite SmFe(1-x)AlxO3

李娜娜, 李会, 唐瑞莲, 韩丹丹, 赵永胜, 高伟, 朱品文, 王欣   

  1. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
  • 收稿日期:2013-08-09 修回日期:2013-11-14 出版日期:2014-04-15 发布日期:2014-04-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 51172091).

Doping effects on structural and magnetic evolutions of orthoferrite SmFe(1-x)AlxO3

Li Na-Na (李娜娜), Li Hui (李会), Tang Rui-Lian (唐瑞莲), Han Dan-Dan (韩丹丹), Zhao Yong-Sheng (赵永胜), Gao Wei (高伟), Zhu Pin-Wen (朱品文), Wang Xin (王欣)   

  1. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
  • Received:2013-08-09 Revised:2013-11-14 Online:2014-04-15 Published:2014-04-15
  • Contact: Zhu Pin-Wen, Wang Xin E-mail:zhupw@jlu.edu.cn;xin_wang@jlu.edu.cn
  • About author:61.05.cp; 61.50.-f; 75.60.-d; 75.30.Et
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 51172091).

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摘要： The structural and magnetic properties of SmFeO3 with B site substitution of non-magnetic atom Al are investigated. The x-ray diffraction patterns show that SmFe(1-x)AlxO3 remains an orthorhombic structure within the whole doping range, and the unit-cell volume decreases monotonically with the increase of doped Al concentration. Besides, the octahedral tilting distortions of FeO6 are found to be alleviated while the tolerance factor increases. However, the relationship between the lattice parameters and Al concentration is observed to deviate from Vegard's rule, and this may be caused by magnetostriction effects. For the doping content values in a range 0 ≤ x ≤ 0.6, the ferromagnetism, antiferromagnetism, and paramagnetism are observed to occur continuously. Moreover, the magnetization and the spin reorientation temperature (Tk) decrease monotonically as Al content value increases. With the doping content values being x = 0.8 and 1.0, these compounds only show paramagnetic behavior.

关键词: magnetic materials, X-ray diffraction, magnetic properties

Abstract: The structural and magnetic properties of SmFeO3 with B site substitution of non-magnetic atom Al are investigated. The x-ray diffraction patterns show that SmFe(1-x)AlxO3 remains an orthorhombic structure within the whole doping range, and the unit-cell volume decreases monotonically with the increase of doped Al concentration. Besides, the octahedral tilting distortions of FeO6 are found to be alleviated while the tolerance factor increases. However, the relationship between the lattice parameters and Al concentration is observed to deviate from Vegard's rule, and this may be caused by magnetostriction effects. For the doping content values in a range 0 ≤ x ≤ 0.6, the ferromagnetism, antiferromagnetism, and paramagnetism are observed to occur continuously. Moreover, the magnetization and the spin reorientation temperature (Tk) decrease monotonically as Al content value increases. With the doping content values being x = 0.8 and 1.0, these compounds only show paramagnetic behavior.

Key words: magnetic materials, X-ray diffraction, magnetic properties

中图分类号:  (X-ray diffraction)

  • 61.05.cp
61.50.-f (Structure of bulk crystals) 75.60.-d (Domain effects, magnetization curves, and hysteresis) 75.30.Et (Exchange and superexchange interactions)