Magnetization reversal of ultrathin Fe film grown on Si(111) using iron silicide template
He Wei(何为)†, Zhan Qing-Feng(詹清峰), Wang De-Yong(王德勇), Chen Li-Jun(陈立军), Sun Young(孙阳), and Cheng Zhao-Hua(成昭华)
State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
Abstract Ultrathin Fe films were epitaxially grown on Si(111) by using an ultrathin iron silicide film with $p(2\times2$) surface reconstruction as a template. The surface structure and magnetic properties were investigated in situ by low energy electron diffraction (LEED), scanning tunnelling microscopy (STM), and surface magneto-optical effect (SMOKE). Polar SMOKE hysteresis loops demonstrate that the Fe ultrathin films with thickness $t<6$ ML (monolayers) exhibit perpendicular magnetic anisotropy. The characters of $M$--$H$ loops with the external magnetic field at difference angles and the angular dependence of coercivity suggest that the domain-wall pinning plays a dominant role in the magnetization reversal process.
(Magnetic properties of monolayers and thin films)
Cite this article:
He Wei(何为), Zhan Qing-Feng(詹清峰), Wang De-Yong(王德勇), Chen Li-Jun(陈立军), Sun Young(孙阳), and Cheng Zhao-Hua(成昭华) Magnetization reversal of ultrathin Fe film grown on Si(111) using iron silicide template 2007 Chinese Physics 16 3541
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