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

doi:10.1088/1674-1056/22/3/037503

Abstract The crystal structure, magnetic and magnetostrictive properties of high-pressure synthesized Pr_xNd_1-xFe_1.9(0≤x≤1.0) alloys were studied. The alloys exhibit single cubic Laves phase with MgCu₂-type structure. The initial magnetization curve reveals that Pr_0.2Nd_0.8Fe_1.9 has a minimum magnetocrystalline anisotropy at 5 K. The magnetostriction curve at 5 K shows that Pr_0.2Nd_0.8Fe_1.9 has a very good low-field magnetostrictive property, and the magnetostriction of the Pr_xNd_1-xFe_1.9 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 Pr_0.2Nd_0.8Fe_1.9 and Pr_0.8Nd_0.2Fe_1.9 alloys are nearly five times larger than that of PrFe_1.9 alloy below 50 K; the λ_|| of Pr_0.8Nd_0.2Fe_1.9 reaches up to 1082 ppm at 100 K, which makes it a potential candidate for application in this temperature range.

Keywords: magnetostriction rare-earth compounds cubic Laves phase high-pressure annealing

Received: 06 October 2012
Revised: 24 October 2012
Accepted manuscript online:

PACS:	75.50.Bb	(Fe and its alloys)
	75.80.+q	(Magnetomechanical effects, magnetostriction)

Fund: 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.

Corresponding Authors: Tang Shao-Long
E-mail: tangsl@nju.edu.cn

Cite this article:

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) Magnetic properties and magnetostriction of Pr_xNd_1-xFe_1.9 (0≤x≤1.0) alloys at low temperature 2013 Chin. Phys. B 22 037503

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

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Magnetic properties and magnetostriction of Pr_xNd_1-xFe_1.9 (0≤x≤1.0) alloys at low temperature