中国物理B ›› 1996, Vol. 5 ›› Issue (2): 126-142.doi: 10.1088/1004-423X/5/2/006

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MAGNETIC POLARIZATION OF Pd SPACERS AND OSCILLATORY EXCHANGE COUPLING BETWEEN Fe AND Pd LAYERS IN Fe/Pd MULTILAYERS

徐荣历1, 梅良模2, 李民2, 解士杰2, 刘宜华2   

  1. (1)Department of Mathematic Physics, Shandong Industrial University, Jinan 250014, China; (2)Department of Physics, Shandong University, Jinan 250100, China
  • 收稿日期:1995-01-24 出版日期:1996-02-20 发布日期:1996-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China, the Doctoral Foundation of National Education Commission of China and by State Key Laboratory of Magnetism, Chinese Academy of Sciences.

MAGNETIC POLARIZATION OF Pd SPACERS AND OSCILLATORY EXCHANGE COUPLING BETWEEN Fe AND Pd LAYERS IN Fe/Pd MULTILAYERS

MEI LIANG-MO (梅良模)a, LI MIN (李民)a, XIE SHI-JIE (解士杰)a, LIU YI-HUA (刘宜华)a, XU RONG-LI (徐荣历)b   

  1. a Department of Physics, Shandong University, Jinan 250100, China; b Department of Mathematic Physics, Shandong Industrial University, Jinan 250014, China
  • Received:1995-01-24 Online:1996-02-20 Published:1996-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China, the Doctoral Foundation of National Education Commission of China and by State Key Laboratory of Magnetism, Chinese Academy of Sciences.

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摘要： Ay oscillatory behavior in specific saturation magnetization of Fe/Pd multilayers is observed. The conversion electron M?ssbauer spectroscopy and other experiments indicate that this behavior is caused by the magnetic polarization of Pd spacers, which alternates between positive and negative polarization with respect to the magnetic moments of Fe layers. The interlayer coupling between two Fe layers always keeps ferromagnetic. Then, the interlayer couplings in ferromagnetic metal/nearly ferromagnetic metal multilayers were calculated By using the model of Barnas. The results of calculation prove that the above phenomenon might appear under some condition. The influence of magnetic polarization potential of spacers and interface chemical potential on the interlayer couplings is also discussed.

Abstract: Ay oscillatory behavior in specific saturation magnetization of Fe/Pd multilayers is observed. The conversion electron M$\ddot{\rm o}$ssbauer spectroscopy and other experiments indicate that this behavior is caused by the magnetic polarization of Pd spacers, which alternates between positive and negative polarization with respect to the magnetic moments of Fe layers. The interlayer coupling between two Fe layers always keeps ferromagnetic. Then, the interlayer couplings in ferromagnetic metal/nearly ferromagnetic metal multilayers were calculated By using the model of Barnas. The results of calculation prove that the above phenomenon might appear under some condition. The influence of magnetic polarization potential of spacers and interface chemical potential on the interlayer couplings is also discussed.

中图分类号:  (Magnetic properties of interfaces (multilayers, superlattices, heterostructures))

  • 75.70.Cn
75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 75.30.Et (Exchange and superexchange interactions) 76.80.+y (M?ssbauer effect; other γ-ray spectroscopy) 75.30.Cr (Saturation moments and magnetic susceptibilities)