Open AccessImprovement of perpendicular anisotropy of columnar FePt-ZrO2-C films with FePt insert layer
Author(s) -
Kaifeng Dong,
Wenqin Mo,
Fang Jin,
Junlei Song,
Weimin Cheng,
Haiwei Wang
Publication year - 2017
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.5005039
Subject(s) - materials science , layer (electronics) , microstructure , insert (composites) , anisotropy , perpendicular , grain size , composite material , magnetic anisotropy , thin film , condensed matter physics , nuclear magnetic resonance , optics , nanotechnology , magnetization , magnetic field , geometry , physics , mathematics , quantum mechanics
The effects of various thicknesses of FePt insert layer on the microstructure and magnetic properties of FePt-ZrO2-C thin films have been investigated. It is found that with inserting 0.4 nm FePt films between the TiON intermediate layer and FePt-ZrO2-C layer, the perpendicular anisotropy indicated by Hc⊥/Hc//ratio would increase from 4 to 13.1, suggesting the perpendicular anisotropy could be improved a lot with using FePt insert layer. Simultaneously, the FePt grains of FePt-ZrO2-C thin films maintained columnar structure and the grain isolation could also be improved in a certain degree. With further increase of the FePt insert layer thickness, although the perpendicular anisotropy was still larger than that without FePt insert layer, the grain size of the FePt-ZrO2-C films would increase and the isolation would be deteriorated.
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