Negative dependence of surface magnetocrystalline anisotropy energy on film thickness in Co33Fe67 alloy

doi:10.1088/1674-1056/25/10/107501

Abstract In this work, the magnetocrystalline anisotropy energy (MAE) on the surface of Fe₃₃Co₆₇ alloy film is extracted from x-ray magnetic linear dichroism (XMLD) experiments. The result indicates that the surface MAE value is negatively correlated with thickness. Through spectrum calculations and analysis, we find that besides the thickness effect, another principal possible cause may be the shape anisotropy resulting from the presence of interface roughness. These two factors lead to different electron structures on the fermi surface with different exchange fields, which produces different spin-orbit interaction anisotropies.

Keywords: magnetocrystalline anisotropy energy x-ray magnetic linear dichroism L_2,3 edge ligand field multiplet

Received: 01 April 2016
Revised: 31 May 2016
Accepted manuscript online:

PACS:	75.30.Gw	(Magnetic anisotropy)
	75.70.Rf	(Surface magnetism)
	75.50.Bb	(Fe and its alloys)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11075176 and 11375131).

Corresponding Authors: Ming-Qi Cui
E-mail: cuimq@ihep.ac.cn

Cite this article:

De-Lai Wang(王得来), Ming-Qi Cui(崔明启), Dong-Liang Yang(杨栋亮), Jun-Cai Dong(董俊才), Wei Xu(徐伟) Negative dependence of surface magnetocrystalline anisotropy energy on film thickness in Co₃₃Fe₆₇ alloy 2016 Chin. Phys. B 25 107501

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Negative dependence of surface magnetocrystalline anisotropy energy on film thickness in Co33Fe67 alloy

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Negative dependence of surface magnetocrystalline anisotropy energy on film thickness in Co₃₃Fe₆₇ alloy