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Chin. Phys. B, 2019, Vol. 28(11): 117501    DOI: 10.1088/1674-1056/ab47f6
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

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 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
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.
Keywords:  Tb substitution      spin reorientation      magnetostriction      easy magnetization direction (EMD)  
Received:  02 June 2019      Revised:  19 September 2019      Published:  05 November 2019
PACS:  75.50.Bb (Fe and its alloys)  
  75.80.+q (Magnetomechanical effects, magnetostriction)  
Fund: 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).
Corresponding Authors:  Yan-Mei Tang, Xiang Li     E-mail:  tangym0707@163.com;xli1984@hotmail.com

Cite this article: 

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) Influence of Tb on easy magnetization direction and magnetostriction of PrFe1.9 alloy 2019 Chin. Phys. B 28 117501

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