Effect of Fe substitution on the phase stability and magnetic properties of Mn-rich Ni-Mn-Ga ferromagnetic shape memory alloys

被引：8
|
作者：
Singh, R. K. [1 ]
Raja, M. Manivel [1 ]
Mathur, R. P. [1 ]
Shamsuddin, M. [2 ]
机构：
[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India
[2] Banaras Hindu Univ, Inst Technol, Dept Met Engn, Varanasi 221005, Uttar Pradesh, India
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2011年 / 323卷 / 05期
关键词：
Ferromagnetic shape memory alloy; Phase stability; Magnetic property; Mossbauer spectroscopy; MARTENSITIC-TRANSFORMATION; CRYSTAL-STRUCTURE; FIELD; TEMPERATURES;
D O I：
10.1016/j.jmmm.2010.10.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of Fe additions on the martensitic transformation and magnetic properties of Mn-rich Ni-Mn-Ga alloys was investigated by substituting either 1 at% Fe for each atomic species or by substituting Ni with varying amounts of Fe. The magnetic structure of the alloys was studied using Fe-57 Mossbauer spectroscopy. Mossbauer spectra revealed typical paramagnetic features in Mn-rich Ni-Mn-Ga-Fe alloys owing to the preferential site occupancy of Fe atoms at Ni sites. The evolution of the magnetic properties and phase stability has been correlated with the chemical and atomic ordering in these alloys. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：574 / 578
页数：5
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