Effect of oxidation of the ultrathin Fe electrode material on the strength of magnetoelectric coupling in composite multiferroics

被引：23
作者：
Fechner, M. [1 ]
Ostanin, S. [1 ]
Mertig, I. [1 ,2 ]
机构：
[1] Max Planck Inst Mikrostrukt Phys, D-06120 Halle, Germany
[2] Univ Halle Wittenberg, Fachbereich Phys, D-06099 Halle, Germany
来源：
PHYSICAL REVIEW B | 2009年 / 80卷 / 09期
关键词：
ab initio calculations; adsorbed layers; barium compounds; dielectric polarisation; ferroelectric materials; ferroelectric switching; ferromagnetic materials; interface magnetism; iron; lead compounds; magnetisation; magnetoelectric effects; multiferroics; oxidation; oxygen; POLARIZATION;
D O I：
10.1103/PhysRevB.80.094405
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present an ab initio study of the effect of iron oxidation on magnetoelectric coupling which appears at the ferromagnet/ferroelectric interface, such as Fe-2/ATiO(3)(001) (A=Ba,Pb). The oxygen coverage, c, ranging between one half and two adsorbed O per each Fe atom was simulated within a slab geometry. Since the change in magnetization induced by electric polarization reversal remains robust below c < 3/2, we suggest that the surface oxidation of composite multiferroics will not significantly damage their switchable magnetoelectricity.
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页数：8
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