Journal
APPLIED PHYSICS LETTERS
Volume 83, Issue 9, Pages 1785-1787Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1606492
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In order to develop the FePt (001) texture on an Fe-Ta-C magnetic soft underlayer (SUL), a combined SiO2/MgO intermediate layer is used between the SUL and FePt/MgO laminated recording layer. The function of the amorphous SiO2 layer is to cut the epitaxial growth relationship between the SUL and recording layer and to establish the MgO (200) texture. The thin FePt layers are epitaxially grown on the MgO layers and transformed into (001)-textured L1(0) FePt films upon annealing. Increasing the surface roughness of the Fe-Ta-C SUL from 0.74 to 2.35 nm does not significantly affect the FePt (001) texture, but has an effect on the FePt grain c-axis dispersion and the FePt L1(0) phase ordering. (C) 2003 American Institute of Physics.
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