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Effects Of Deposition Temperature And In-Situ Annealing Time On Structure And Magnetic Properties Of (001) Orientation Fept Films, Yongsheng Yu, T A. George, Haibo Li, Daqian Sun, Zhenan Ren, David J. Sellmyer

David Sellmyer Publications

FePt films were prepared on (100) oriented single crystal MgO substrates at high temperature rang-ing from 620 until 800°C and in-situ annealed for different times ranging from 0 to 60 min to obtain ordered FePt films. The structural analysis indicates that FePt films grow epitaxially on MgO (100) substrates. Both increasing deposition temperature and in-situ annealing time enhance the (001) tex-ture and ordering of FePt films. The magnetic analysis shows that these L10 FePt films have perpen-dicular anisotropy and the easy magnetization c-axis is perpendicular to the film plane. Magnetization reversal is controlled by a rotational mechanism. The hard magnetic …