Perpendicular L10-FePt/Fe and L10-FePt/Ru/Fe graded media obtained by post-annealing
Materials Chemistry and Physics(2011)
摘要
L 1 0 -FePt/Fe and L 1 0 -FePt/Ru/Fe films with perpendicular orientations were fabricated by magnetron sputtering and post-annealing. In comparison to films with sharp interfaces, the graded L 1 0 -FePt/Fe interface was more favorable for coercivity reduction. Inserting a ruthenium (Ru) interlayer between the hard L 1 0 -FePt and the soft iron (Fe) layers yielded a continuous L 1 0 -FePt/Fe graded film, which contributed to a large reduction in coercivity. The coercivity of L 1 0 -FePt/Ru/Fe films can be manipulated via the Ru thickness when the soft Fe layer is thin and via the Fe thickness when the soft Fe layer is thick.
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关键词
L10-FePt thin film,Graded media,Coercivity,Post-annealing
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