Large modulation of perpendicular magnetic anisotropy by CoPt3 induction in Co/Pt multilayers with Fe2O3 inserting
Source abstract
Abstract
The effect of ultra-thin discontinuous Fe 2O 3 inserting on the perpendicular magnetic anisotropy (PMA) in Ta(3)/Pt(1)/[Pt(1)/Fe 2O 3( t)/Co(0.4)] 3/Pt(2)/Ta(4) films(unit:nm)is studied. It is found that the addition of Fe 2O 3 blocked the connection between Pt and Co at the Pt/Co interface and prevented the generation of Co/Pt superlattice structure in the as-deposited film, so that the film does not show PMA. After 400 ℃ annealing, CoPt 3(1 1 1) structure was formed and the film exhibited PMA. The film with Fe 2O 3 inserting has better CoPt 3(1 1 1) crystal structure and lower coercivity than those without inserting. Inserting Fe 2O 3 is good way to increase the PMA and thermal stability in [Co/Pt] n multilayer.
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Research context
OpenAlex topics: Magnetic properties of thin films · Nanoporous metals and alloys · Theoretical and Computational Physics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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