Xiaoli Li, Fang Wang, Fengxian Jiang, Xiaohong Xu,  and Haishun Wu, Microstructure and magnetic properties of FePt/MgO multilayers deposited by RF magnetron sputtering, J. Univ. Sci. Technol. Beijing, 15(2008), No. 2, pp. 173-177. https://doi.org/10.1016/S1005-8850(08)60033-X
Cite this article as:
Xiaoli Li, Fang Wang, Fengxian Jiang, Xiaohong Xu,  and Haishun Wu, Microstructure and magnetic properties of FePt/MgO multilayers deposited by RF magnetron sputtering, J. Univ. Sci. Technol. Beijing, 15(2008), No. 2, pp. 173-177. https://doi.org/10.1016/S1005-8850(08)60033-X
Materials

Microstructure and magnetic properties of FePt/MgO multilayers deposited by RF magnetron sputtering

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  • FePt (50 nm) and [FePt(a nm)/MgO(b nm)5/glass (a=1, 2, 3; b=1, 2, 3) films were prepared by radio frequency (RF) magnetron sputtering technique, and then were annealed at 600℃ for 30 min. The effect of MgO layer thickness on the structures and magnetic properties of the FePt/MgO multilayers was investigated. The coercivities and inter-grain interactions of the FePt/MgO films were decreased, yet the degree of (001) texturing drastically increased with the increase in MgO layer thickness when the FePt layer thickness was fixed. Thus, the FePt/MgO films with appropriate coercivities, high perpendicular anisotropy, and weak intergrain interactions were obtained by controlling the MgO layer thickness. Overall, these results indicate that the FePt/MgO nanostructured films are promising candidates for future high-density perpendicular recording media.
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