中国物理B ›› 1994, Vol. 3 ›› Issue (10): 780-787.doi: 10.1088/1004-423X/3/10/008

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TEMPERATURE DEPENDENCE OF ANISOTROPY IN Co/X(Pt, Au, Ag, Ni) MULTILAYER FILMS

张慧云, 王荫君   

  1. State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica, Beijing 100080, China
  • 收稿日期:1993-11-22 出版日期:1994-10-20 发布日期:1994-10-20
  • 基金资助:
    Project supported by the National Natural Sciences Foundation of China and by the State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica.

TEMPERATURE DEPENDENCE OF ANISOTROPY IN Co/X(Pt, Au, Ag, Ni) MULTILAYER FILMS

ZHANG HUI-YUN (张慧云), WANG YIN-JUN (王荫君)   

  1. State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica, Beijing 100080, China
  • Received:1993-11-22 Online:1994-10-20 Published:1994-10-20
  • Supported by:
    Project supported by the National Natural Sciences Foundation of China and by the State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica.

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摘要： Temperature dependences of effective perpendicular anisotropy (PA) Ku and inter-face energy Ks for Co/X(Pt, Au, Ag, Ni) multilayer films(MFs) as well as of spontaneous magnetization Ms for Co/Pt and Co/Au MFs are reported. The dependence of Ks on T dis-tinguishes between Go/Au, Co/Ni and Co/Pt, Co/Ag MFs, i.e., Ks of the former decreases with the increase of T, but it increases for the latter. Co/Pt MFs with the perpendicular anisotropy possess a large enhancement of Ms at low temperature, but there is not any en-hancement for Co/Au MFs. We have discussed the source of PA in Co/Au and Co/Pt MFs and speculated that the strain due to the lattice mismatch may be the main cause of PA in Co/Au MFs, but it is not for Co/Pt MFs.

Abstract: Temperature dependences of effective perpendicular anisotropy (PA) Ku and inter-face energy Ks for Co/X(Pt, Au, Ag, Ni) multilayer films(MFs) as well as of spontaneous magnetization Ms for Co/Pt and Co/Au MFs are reported. The dependence of Ks on T dis-tinguishes between Go/Au, Co/Ni and Co/Pt, Co/Ag MFs, i.e., Ks of the former decreases with the increase of T, but it increases for the latter. Co/Pt MFs with the perpendicular anisotropy possess a large enhancement of Ms at low temperature, but there is not any en-hancement for Co/Au MFs. We have discussed the source of PA in Co/Au and Co/Pt MFs and speculated that the strain due to the lattice mismatch may be the main cause of PA in Co/Au MFs, but it is not for Co/Pt MFs.

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

  • 75.70.Cn
75.30.Gw (Magnetic anisotropy) 75.30.Cr (Saturation moments and magnetic susceptibilities)