中国物理B ›› 2013, Vol. 22 ›› Issue (3): 37503-037503.doi: 10.1088/1674-1056/22/3/037503

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

Magnetic properties and magnetostriction of PrxNd1-xFe1.9 (0≤x≤1.0) alloys at low temperature

王永, 唐少龙, 李玉龙, 谢忍, 都有为   

  1. Nanjing National Laboratory of Microstructures, Jiangsu Provincial Laboratory for Nanotechnology, and Department of Physics, Nanjing University, Nanjing 210093, China
  • 收稿日期:2012-10-06 修回日期:2012-10-24 出版日期:2013-02-01 发布日期:2013-02-01
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2012CB932304), the National Natural Science Foundation of China (Grant Nos. 50831006 and 50771055), and the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.

Magnetic properties and magnetostriction of PrxNd1-xFe1.9 (0≤x≤1.0) alloys at low temperature

Wang Yong (王永), Tang Shao-Long (唐少龙), Li Yu-Long (李玉龙), Xie Ren (谢忍), Du You-Wei (都有为)   

  1. Nanjing National Laboratory of Microstructures, Jiangsu Provincial Laboratory for Nanotechnology, and Department of Physics, Nanjing University, Nanjing 210093, China
  • Received:2012-10-06 Revised:2012-10-24 Online:2013-02-01 Published:2013-02-01
  • Contact: Tang Shao-Long E-mail:tangsl@nju.edu.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2012CB932304), the National Natural Science Foundation of China (Grant Nos. 50831006 and 50771055), and the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.

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摘要： The crystal structure, magnetic and magnetostrictive properties of high-pressure synthesized PrxNd1-xFe1.9 (0≤x≤1.0) alloys were studied. The alloys exhibit single cubic Laves phase with MgCu2-type structure. The initial magnetization curve reveals that Pr0.2Nd0.8Fe1.9 has a minimum magnetocrystalline anisotropy at 5 K. The magnetostriction curve at 5 K shows that Pr0.2Nd0.8Fe1.9 has a very good low-field magnetostrictive property, and the magnetostriction of the PrxNd1-xFe1.9 alloy in high magnetic field is attributable mainly to Pr. The temperature dependence of the magnetostriction (λ||) at the field of 5 kOe shows that the substitution of Nd reduces the K1 remarkably, and the values of λ|| of Pr0.2Nd0.8Fe1.9 and Pr0.8Nd0.2Fe1.9 alloys are nearly five times larger than that of PrFe1.9 alloy below 50 K; the λ|| of Pr0.8Nd0.2Fe1.9 reaches up to 1082 ppm at 100 K, which makes it a potential candidate for application in this temperature range.

关键词: magnetostriction, rare-earth compounds, cubic Laves phase, high-pressure annealing

Abstract: The crystal structure, magnetic and magnetostrictive properties of high-pressure synthesized PrxNd1-xFe1.9 (0≤x≤1.0) alloys were studied. The alloys exhibit single cubic Laves phase with MgCu2-type structure. The initial magnetization curve reveals that Pr0.2Nd0.8Fe1.9 has a minimum magnetocrystalline anisotropy at 5 K. The magnetostriction curve at 5 K shows that Pr0.2Nd0.8Fe1.9 has a very good low-field magnetostrictive property, and the magnetostriction of the PrxNd1-xFe1.9 alloy in high magnetic field is attributable mainly to Pr. The temperature dependence of the magnetostriction (λ||) at the field of 5 kOe shows that the substitution of Nd reduces the K1 remarkably, and the values of λ|| of Pr0.2Nd0.8Fe1.9 and Pr0.8Nd0.2Fe1.9 alloys are nearly five times larger than that of PrFe1.9 alloy below 50 K; the λ|| of Pr0.8Nd0.2Fe1.9 reaches up to 1082 ppm at 100 K, which makes it a potential candidate for application in this temperature range.

Key words: magnetostriction, rare-earth compounds, cubic Laves phase, high-pressure annealing

中图分类号:  (Fe and its alloys)

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