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.
Received: 22 November 1993
Accepted manuscript online:
PACS:
75.70.Cn
(Magnetic properties of interfaces (multilayers, superlattices, heterostructures))
(Saturation moments and magnetic susceptibilities)
Fund: Project supported by the National Natural Sciences Foundation of China and by the State Key Laboratory of Magnetism, Institute of Physics, Academia Sinica.
Cite this article:
ZHANG HUI-YUN (张慧云), WANG YIN-JUN (王荫君) TEMPERATURE DEPENDENCE OF ANISOTROPY IN Co/X(Pt, Au, Ag, Ni) MULTILAYER FILMS 1994 Acta Physica Sinica (Overseas Edition) 3 780
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