Electric-field control of surface magnetic anisotropy: a density functional approach

In a recent experiment, Weisheit et al ( 2007 Science 315 349) demonstrated that the coercivity of thin L1(0) FePt and FePd films can be modified by the external electric field in an electrochemical environment. Here, this observation is confirmed by density functional calculations for the intrinsic...

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Bibliographic Details
Published in:	New journal of physics Vol. 11; no. 4; p. 043007
Main Authors:	Zhang, Hongbin, Richter, Manuel, Koepernik, Klaus, Opahle, Ingo, Tasnádi, Ferenc, Eschrig, Helmut
Format:	Journal Article
Language:	English
Published:	IOP Publishing 03-04-2009
Subjects:	NATURAL SCIENCES NATURVETENSKAP
Online Access:	Get full text
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Summary:	In a recent experiment, Weisheit et al ( 2007 Science 315 349) demonstrated that the coercivity of thin L1(0) FePt and FePd films can be modified by the external electric field in an electrochemical environment. Here, this observation is confirmed by density functional calculations for the intrinsic magnetic anisotropy. The origin of the effect is clarified by means of a general and simple method to simulate charged metal surfaces. It is predicted that the coercivity of thin CoPt films is much more susceptible to electric field than that of FePt films.
ISSN:	1367-2630 1367-2630
DOI:	10.1088/1367-2630/11/4/043007