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

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

中国物理B ›› 2016, Vol. 25 ›› Issue (10): 107501-107501.doi: 10.1088/1674-1056/25/10/107501

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

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

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)

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2016-04-01 修回日期:2016-05-31 出版日期:2016-10-05 发布日期:2016-10-05
通讯作者: Ming-Qi Cui E-mail:cuimq@ihep.ac.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11075176 and 11375131).

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

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)

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Received:2016-04-01 Revised:2016-05-31 Online:2016-10-05 Published:2016-10-05
Contact: Ming-Qi Cui E-mail:cuimq@ihep.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11075176 and 11375131).

摘要/Abstract

摘要： 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.

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

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.

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

中图分类号: (Magnetic anisotropy)

75.30.Gw

75.70.Rf (Surface magnetism) 75.50.Bb (Fe and its alloys)

王得来, 崔明启, 杨栋亮, 董俊才, 徐伟. Negative dependence of surface magnetocrystalline anisotropy energy on film thickness in Co₃₃Fe₆₇ alloy[J]. 中国物理B, 2016, 25(10): 107501-107501.

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[J]. Chin. Phys. B, 2016, 25(10): 107501-107501.

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

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

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