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Understanding strong magnetostriction in Fe100-xGax alloys
H. Wang; Y. N. Zhang; R. Q. Wu; L. Z. Sun; D. S. Xu; Z. D. Zhang
2013
Source PublicationScientific Reports
ISSN2045-2322
Volume3
AbstractMagnetostriction of ferromagnetic materials describes the change of their shape or dimension in response to the reorientation of magnetization under the influence of external magnetic field. Fe100-xGax binary alloys (Galfenol) have large magnetostriction and excellent ductility; and they are very promising rare-earth free materials for applications in sensors, actuators, energy-harvesters and spintronic devices. Here we report results of large-scale ab initio molecular dynamics (AIMD) simulations for Galfenol, especially regarding the mechanism that leads to the sudden drop of tetragonal magnetostriction at x similar to 19, a long-standing puzzle for the community. Based on rigid band analysis, we propose possible ways to further optimize the performance of Galfenol for device applications. For example, we found that the substitution of a small amount of Cu for Ga (1.6%) in certain configuration may double the magnetostriction of Galfenol.
description.department[wang, hui ; zhang, z. d.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [wang, hui ; zhang, z. d.] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. [wang, hui ; zhang, y. n. ; wu, r. q.] univ calif irvine, dept phys & astron, irvine, ca 92697 usa. [wang, hui ; sun, l. z.] univ calif irvine, dept civil & environm engn, irvine, ca 92697 usa. [xu, d. s.] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; wu, rq (reprint author), univ calif irvine, dept phys & astron, irvine, ca 92697 usa. ; wur@uci.edu
KeywordFe-ga Alloys Magnetoelasticity Galfenol
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/72431
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
H. Wang,Y. N. Zhang,R. Q. Wu,et al. Understanding strong magnetostriction in Fe100-xGax alloys[J]. Scientific Reports,2013,3.
APA H. Wang,Y. N. Zhang,R. Q. Wu,L. Z. Sun,D. S. Xu,&Z. D. Zhang.(2013).Understanding strong magnetostriction in Fe100-xGax alloys.Scientific Reports,3.
MLA H. Wang,et al."Understanding strong magnetostriction in Fe100-xGax alloys".Scientific Reports 3(2013).
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