中国物理B ›› 2014, Vol. 23 ›› Issue (1): 17502-017502.doi: 10.1088/1674-1056/23/1/017502

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

Determination of the magnetic anisotropy constant of Cu/Fe/SiO2/Si by a magneto-optical Kerr effect susceptometer

贾义娇a b, 何为a, 叶军a c, 胡泊a, 陈子瑜c, 高有辉b, 张向群a, 杨海涛a, 成昭华a   

  1. a State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    b Department of Physics, Beijing Normal University, Beijing 100875, China;
    c Department of Physics, Beihang University, Beijing 100191, China
  • 收稿日期:2013-06-25 修回日期:2013-08-29 出版日期:2013-11-12 发布日期:2013-11-12
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant Nos. 2009CB929201, 2011CB921801, and 2012CB933102) and the National Natural Science Foundation of China (Grant Nos. 50931006, 11034004, 51021061, and 11274033).

Determination of the magnetic anisotropy constant of Cu/Fe/SiO2/Si by a magneto-optical Kerr effect susceptometer

Jia Yi-Jiao (贾义娇)a b, He Wei (何为)a, Ye Jun (叶军)a c, Hu Bo (胡泊)a, Chen Zi-Yu (陈子瑜)c, Gao You-Hui (高有辉)b, Zhang Xiang-Qun (张向群)a, Yang Hai-Tao (杨海涛)a, Cheng Zhao-Hua (成昭华)a   

  1. a State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    b Department of Physics, Beijing Normal University, Beijing 100875, China;
    c Department of Physics, Beihang University, Beijing 100191, China
  • Received:2013-06-25 Revised:2013-08-29 Online:2013-11-12 Published:2013-11-12
  • Contact: Cheng Zhao-Hua E-mail:zhcheng@iphy.ac.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant Nos. 2009CB929201, 2011CB921801, and 2012CB933102) and the National Natural Science Foundation of China (Grant Nos. 50931006, 11034004, 51021061, and 11274033).

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摘要： The magneto-optical Kerr effect susceptometry technique is proposed to determine the uniaxial magnetic anisotropy (UMA) constant Ku. The magnetic properties of Cu/Fe/SiO2/Si grown by dc magnetron sputtering were investigated. The in-plane uniaxial magnetic anisotropy was probed by the magneto-optical Kerr effect (MOKE). The value of UMA, Ku=2.5×103 J/m3, was simulated from the field dependence of ac susceptibility along the hard axis according to the Stoner–Wohlfarth (S–W) model, which is consistent with Ku=2.7×103 J/m3 calculated from the magnetic hysteresis loops. Our results show that the magneto-optical Kerr effect susceptometry can be employed to determine the magnetic anisotropy constant owing to its high sensitivity.

关键词: ac susceptibility, magnetic anisotropy, magneto-optical Kerr effect susceptometry

Abstract: The magneto-optical Kerr effect susceptometry technique is proposed to determine the uniaxial magnetic anisotropy (UMA) constant Ku. The magnetic properties of Cu/Fe/SiO2/Si grown by dc magnetron sputtering were investigated. The in-plane uniaxial magnetic anisotropy was probed by the magneto-optical Kerr effect (MOKE). The value of UMA, Ku=2.5×103 J/m3, was simulated from the field dependence of ac susceptibility along the hard axis according to the Stoner–Wohlfarth (S–W) model, which is consistent with Ku=2.7×103 J/m3 calculated from the magnetic hysteresis loops. Our results show that the magneto-optical Kerr effect susceptometry can be employed to determine the magnetic anisotropy constant owing to its high sensitivity.

Key words: ac susceptibility, magnetic anisotropy, magneto-optical Kerr effect susceptometry

中图分类号:  (Magnetic anisotropy)

  • 75.30.Gw
75.50.Bb (Fe and its alloys) 75.30.Cr (Saturation moments and magnetic susceptibilities) 75.60.Jk (Magnetization reversal mechanisms)