Journal of the Korean Physical Society

pISSN 0374-4884 eISSN 1976-8524
Qrcode

Article

J. Korean Phy. Soc. 2009; 55(6): 2537-2542

Published online December 15, 2009     https://doi.org/10.3938/jkps.55.2537

Copyright © The Korean Physical Society.

Magnetic Anisotropy and Magneto-Optical Kerr Effect of BCC Ni(001) Films: Ab-initio

Jisang Hong

Abstract

Using the full potential linearized augmented plane wave (FLAPW)method, we have investigated the thickness dependent magneticanisotropy and the magneto-optical kerr effect (MOKE) ofbody-centered-cubic (BCC) Ni films in the range from 15 monolayer(ML) to 21 ML. Through magnetic anisotropy calculations, we haverealized that the clean BCC Ni(001) has an in-plane magnetizationalong the (100) direction until 19 ML, but it changes to the (110)direction at a 21 ML thickness. Interestingly, the Au capped BCCNi(001) film always displays a perpendicular magnetic anisotropy(PMA). This implies that the influence of the interfacecontribution on the magnetic anisotropy is an essential factor.The kerr rotation angle has been shown to be insensitive to thefilm's thickness or the Au capping layer. Also, thicknessdependent X-ray magnetic circular dichroism (XMCD) and X-rayabsorption spectroscopy (XAS) have been presented.

Keywords: Magnetic anisotropy, MOKE, bcc Ni, Magnetism, FLAPW, Ni(001), Film, Au