MAGNETIZATION, COERCIVE FORCES AND MAGNETORESISTANCE IN SIMPLE AND DOUBLE CO FILMS WITH PERPENDICULAR MAGNETIZATION

被引:21
作者
CHAPPERT, C
BEAUVILLAIN, P
BRUNO, P
CHAUYINEAU, JP
GALTIER, M
LEDANG, K
MARLIERE, C
MEGY, R
RENARD, D
RENARD, JP
SEIDEN, J
TRIGUI, F
VEILLET, P
VELU, E
机构
[1] Institut d'Electronique Fondamentale, CNRS UA 22, Université Paris Sud
[2] Institut d'Optique Théorique et Appliquée, CNRS UA 14, Université Paris Sud
关键词
D O I
10.1016/0304-8853(91)90354-D
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Our Au(111)/Co/Au samples show perpendicular spontaneous magnetization for Co thicknesses t below t* = 1.2 nm. Recent RHEED results are in favour of the existence of an important "strain-induced" anisotropy, helping to overcome the shape anisotropy. From the measured parameters of anisotropy and roughness, we propose a quantitative model that explains the fast variation of the perpendicular coercive force with t below t(c). Finally, disymmetric Au/Co(t1)/Au/Co(t2)/Au bilayers (t1 and t2 < t(c)) show enhanced magnetoresistance (5%) in the field range where the layers are magnetized antiparallel.
引用
收藏
页码:319 / 325
页数:7
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