conclusion Structure and magnetic properties of FexCo1-x films

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Presentation transcript:

conclusion Structure and magnetic properties of FexCo1-x films X.Y.Xu, L.F.Yin, G.S.Dong, X.F.Jin Department of Physics, Fudan University, Shanghai 200433, China Motivation Lattice constant Mismatch(GaAs/5.65) Fe 2.86 +1.23% Co 2.81 -0.5% [-110] [110] Previous explanation 1 chemical bonding 2 interface effect G. Bayreuther et al , J. Magn. Magn. Mate. 198-199 (1999) 384 Fe0.16Co0.84 Fe0.09Co0.91 Fe0.75Co0.25 Fe0.9Co0.1 RHEED Fe0.5Co0.5 Zinc-blende 3 lattice mismatch G. Wastlbauer, J. A. C. Bland, Advances in Physics, 54, 2, 137 (2005). conclusion tuning the uniaxial anisotropy by composition tuning the fourfold anisotropy by compositon