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Chin. Phys. B, 2017, Vol. 26(12): 127502    DOI: 10.1088/1674-1056/26/12/127502
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

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. College of Physics and Technology, Guangxi Normal University, Guilin 541004, China;
2. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
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.

Keywords:  magnetostriction      magnetization      easy magnetization direction (EMD)  
Received:  28 August 2017      Revised:  09 September 2017      Accepted manuscript online: 
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. 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).

Corresponding Authors:  Yan-Mei Tang, Yan-Mei Tang     E-mail:  tangym0707@163.com;tangsl@nju.edu.cn

Cite this article: 

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) Low temperature magnetic and magnetostrictive properties in Pr(Fe1-xCox)1.9 cubic Laves alloys 2017 Chin. Phys. B 26 127502

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