Magnetic properties and spin-reorientation transition of sputtered FexCo1-x/Au multilayers

作者：Wang, H.^*; Tan, Q. S.; Jiang, H. W.; Zheng, W.; Liu, J. T.

来源：Journal of Applied Physics, 2011, 109(12): 123918.

DOI：10.1063/1.3596758

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The magnetic properties of the Au(40 nm)/[FexCo1-x/Au](n)/Au(20 nm) system has been investigated. Perpendicular magnetic anisotropy (PMA) increases with increasing Fe atomic percentage x in the range of 0 < x < 50%, while the saturated magnetization (M-s) decreases slightly. Spin-reorientation in Fe30Co70/Au multilayers occurs around 0.9 nm FeCo. Moreover, K-eff can be tuned by the thickness of Au spacer layer. PMA obtained in Au(40 nm)/[Fe30Co70/Au(15 nm)](20)/Au(20 nm) multilayers is twice as strong as Au(40 nm)/[Fe30Co70/Au(3 nm)](20)/Au(20 nm), which indicates that the interface stress plays a crucial role for PMA in our sample.

• 出版日期2011-6-15
• 单位首都师范大学; 南昌大学