中国物理B ›› 2019, Vol. 28 ›› Issue (11): 117501-117501.doi: 10.1088/1674-1056/ab47f6

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Influence of Tb on easy magnetization direction and magnetostriction of PrFe1.9 alloy

Chang-Xuan He(何昌璇), Yan-Mei Tang(唐妍梅), Xiang Li(李翔), Yun He(何云), Cai-Yan Lu(陆彩燕), Ze-Ping Guo(郭泽平)   

  1. 1 College of Physics and Technology, Guangxi Normal University, Guilin 541004, China;
    2 School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China
  • 收稿日期:2019-06-02 修回日期:2019-09-19 出版日期:2019-11-05 发布日期:2019-11-05
  • 通讯作者: Yan-Mei Tang, Xiang Li E-mail:tangym0707@163.com;xli1984@hotmail.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 51901052) and the Science Foundation of Guangxi Zhuang Autonomous Region, China (Grant No. 2018GXNSFAA281294).

Influence of Tb on easy magnetization direction and magnetostriction of PrFe1.9 alloy

Chang-Xuan He(何昌璇)1, Yan-Mei Tang(唐妍梅)1, Xiang Li(李翔)2, Yun He(何云)1, Cai-Yan Lu(陆彩燕)1, Ze-Ping Guo(郭泽平)1   

  1. 1 College of Physics and Technology, Guangxi Normal University, Guilin 541004, China;
    2 School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China
  • Received:2019-06-02 Revised:2019-09-19 Online:2019-11-05 Published:2019-11-05
  • Contact: Yan-Mei Tang, Xiang Li E-mail:tangym0707@163.com;xli1984@hotmail.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 51901052) and the Science Foundation of Guangxi Zhuang Autonomous Region, China (Grant No. 2018GXNSFAA281294).

摘要: The crystal structures, magnetization, and spontaneous magnetostriction of ferromagnetic Laves phase Pr1-xTbxFe1.9 compounds are investigated in a temperature range between 5 K and 300 K. High resolution synchrotron x-ray diffraction (XRD) analysis shows that different proportions of Tb in Pr1-xTbxFe1.9 alloys can result in different easy magnetization directions (EMD) below 70 K, i.e.,[100] with x=0.0, and[111] with x ≥ 0.1. This indicates Tb substitution can lead the EMD to change from[100] to[111] with x rising from 0.0 up to 0.1. The Tb substitution for Pr reduces the saturation magnetization Ms and the magnetostriction to their minimum value when x=0.6, but it can increase low-field (0 ≤ H ≤ 9 kOe, the unit 1 Oe=79.5775 A·m-1) magnetostriction when x=0.8 and 1.0 at 5 K. This can be attributed to the larger magnetostriction of PrFe1.9 than that of TbFe1.9, as well as the decrease of the resulting anisotropy due to Tb substitution at low temperatures.

关键词: Tb substitution, spin reorientation, magnetostriction, easy magnetization direction (EMD)

Abstract: The crystal structures, magnetization, and spontaneous magnetostriction of ferromagnetic Laves phase Pr1-xTbxFe1.9 compounds are investigated in a temperature range between 5 K and 300 K. High resolution synchrotron x-ray diffraction (XRD) analysis shows that different proportions of Tb in Pr1-xTbxFe1.9 alloys can result in different easy magnetization directions (EMD) below 70 K, i.e.,[100] with x=0.0, and[111] with x ≥ 0.1. This indicates Tb substitution can lead the EMD to change from[100] to[111] with x rising from 0.0 up to 0.1. The Tb substitution for Pr reduces the saturation magnetization Ms and the magnetostriction to their minimum value when x=0.6, but it can increase low-field (0 ≤ H ≤ 9 kOe, the unit 1 Oe=79.5775 A·m-1) magnetostriction when x=0.8 and 1.0 at 5 K. This can be attributed to the larger magnetostriction of PrFe1.9 than that of TbFe1.9, as well as the decrease of the resulting anisotropy due to Tb substitution at low temperatures.

Key words: Tb substitution, spin reorientation, magnetostriction, easy magnetization direction (EMD)

中图分类号:  (Fe and its alloys)

  • 75.50.Bb
75.80.+q (Magnetomechanical effects, magnetostriction)