Synthesis, magnetic properties and magnetostriction of Pr0.5Nd0.5(Fe1-xCox)1.9 cubic Laves alloys

被引：11
作者：
Hu, C. C. [1 ]
Shi, Y. G. [1 ]
Chen, Z. Y. [1 ]
Shi, D. N. [1 ]
Tang, S. L. [2 ]
Du, Y. W. [2 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Dept Appl Phys, Nanjing 210016, Jiangsu, Peoples R China
[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 613卷
关键词：
MgCu2-type structure; High-pressure annealing; Magnetic properties; Magnetostriction; ANISOTROPY COMPENSATION; GIANT MAGNETOSTRICTION; SUBSTITUTION; COMPOUND; PRFE2;
D O I：
10.1016/j.jallcom.2014.05.082
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The structure, magnetic properties and magnetostriction of polycrystalline Pr0.5Nd0.5(Fe1-xCox)(1.9) (0 <= x <= 0.8) alloys were investigated. It is found that cubic Laves phase becomes the main phase only when the Co concentration is greater than 40 at.% under traditional vacuum annealed method. In contrast, the cubic Laves phase exists over the entire composition range studied in the samples annealed under high pressure. Both the lattice parameter and the Curie temperature decrease with the increasing Co concentration. The saturation magnetization increases into a maximum at x = 0.1 and then decreases with further increase in x. The spin orientation phase diagram of Pr0.5Nd0.5(Fe1-xCox)(1.9) (0 <= x <= 0.4) alloys is constructed to illustrate the arrangement for the easy magnetization direction and crystal structure. The magnetostriction of Pr0.5Nd0.5(Fe1-xCox)(1.9) alloys peaks at x = 0.1. The Pr0.5Nd0.5(Fe1-xCo0.1)(1.9) alloy combines a high magnetostriction with low cost advantage, which may make it potential material for magnetostrictive application. (C) 2014 Elsevier B.V. All rights reserved.
引用
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页码：153 / 156
页数：4
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