中国物理B ›› 2017, Vol. 26 ›› Issue (12): 127502-127502.doi: 10.1088/1674-1056/26/12/127502

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

Low temperature magnetic and magnetostrictive properties in Pr(Fe1-xCox)1.9 cubic Laves alloys

Yan-Mei Tang(唐妍梅), Hang-Yu Xu(徐行祤), Ye Huang(黄业), Zhi-Xiong Tang(唐志雄), Shao-Long Tang(唐少龙)   

  1. 1. College of Physics and Technology, Guangxi Normal University, Guilin 541004, China;
    2. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
  • 收稿日期:2017-08-28 修回日期:2017-09-09 出版日期:2017-12-05 发布日期:2017-12-05
  • 通讯作者: Yan-Mei Tang, Yan-Mei Tang E-mail:tangym0707@163.com;tangsl@nju.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. U1232210), the Science Foundation of Guangxi Zhuang Autonomous Region, China (Grant No. 2015GXNSFBA139020), and the Project of the Enhancement of the Basic Ability of Teachers of Guangxi Zhuang Autonomous Region, China (Grant No. KY2016YB068).

Low temperature magnetic and magnetostrictive properties in Pr(Fe1-xCox)1.9 cubic Laves alloys

Yan-Mei Tang(唐妍梅)1, Hang-Yu Xu(徐行祤)1, Ye Huang(黄业)2, Zhi-Xiong Tang(唐志雄)2, Shao-Long Tang(唐少龙)2   

  1. 1. College of Physics and Technology, Guangxi Normal University, Guilin 541004, China;
    2. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
  • Received:2017-08-28 Revised:2017-09-09 Online:2017-12-05 Published:2017-12-05
  • Contact: Yan-Mei Tang, Yan-Mei Tang E-mail:tangym0707@163.com;tangsl@nju.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. U1232210), the Science Foundation of Guangxi Zhuang Autonomous Region, China (Grant No. 2015GXNSFBA139020), and the Project of the Enhancement of the Basic Ability of Teachers of Guangxi Zhuang Autonomous Region, China (Grant No. KY2016YB068).

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摘要：

The structures, spin reorientations, magnetic, and magnetostrictive properties of the polycrystalline Pr(Fe1-xCox)1.9 (x=0-1.0) cubic laves phase alloys between 5 K and 300 K are investigated. Large low-field magnetostrictions are observed at 5 K in the alloys with x=0.2 and 0.4 due to the low magnetic anisotropies of these two alloys. A large negative magnetostriction of about-1130 ppm is found in PrCo1.9 alloy at 5 K. The magnetizations of the alloys with 0 ≤ x ≤ 0.6 decrease abnormally at the spin reorientation temperature Tsr, and an abnormity is detected in the alloy with x=1.0 at its Curie temperature Tc (45 K). The substitution of Fe by Co increases the value of Tsr in the alloy with x value increasing from 0.0 to 0.4, and then reduces the value of Tsr with x value further increasing to 0.6.

关键词: magnetostriction, magnetization, easy magnetization direction (EMD)

Abstract:

The structures, spin reorientations, magnetic, and magnetostrictive properties of the polycrystalline Pr(Fe1-xCox)1.9 (x=0-1.0) cubic laves phase alloys between 5 K and 300 K are investigated. Large low-field magnetostrictions are observed at 5 K in the alloys with x=0.2 and 0.4 due to the low magnetic anisotropies of these two alloys. A large negative magnetostriction of about-1130 ppm is found in PrCo1.9 alloy at 5 K. The magnetizations of the alloys with 0 ≤ x ≤ 0.6 decrease abnormally at the spin reorientation temperature Tsr, and an abnormity is detected in the alloy with x=1.0 at its Curie temperature Tc (45 K). The substitution of Fe by Co increases the value of Tsr in the alloy with x value increasing from 0.0 to 0.4, and then reduces the value of Tsr with x value further increasing to 0.6.

Key words: magnetostriction, magnetization, easy magnetization direction (EMD)

中图分类号:  (Fe and its alloys)

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