AuおよびPt下地層上に蒸着したCo/Pt積層膜の表面形態と磁気特性
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概要
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Co/Pt multilayers were prepared on mica substrates with an Au or Pt layer as an underlayer. Surface probe microscope measurements revealed that the surface of Au underlayers is rather rough and that their surface morphology drastically changes with an increase in thickness. On the other hand, the surface of Pt underlayers was relatively smooth, irrespective of the thickness. The surface morphology of the Co/Pt multilayers was almost the same as that of the underlayers. Co/Pt multilayers as well as Au and Pt underlayers were textured with the (111) plane parallel to the film plane. The perpendicular magnetic anisotropy (PMA) became larger with enhancement of the (111) orientation, and the coercivity of Co/Pt multilayers on Pt underlayers increased with increasing PMA. On the other hand, the coercivity of Co/Pt multilayers on Au underlayers seems to depend on the surface roughness rather than the PMA.
- 社団法人日本磁気学会の論文
- 1999-04-15
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