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Chemically L10 ordered (001) textured FePt thin films with perpendicular magnetic anisotropy can be grown on amorphous planar SiO2 substrate with an underlayer stack of [Pt (3nm)∕Cr (50nm)] adopting a [002] orientation when deposited at 350°C. This knowledge of optimum layer stack was transferred to self-assembled SiO2 particle arrays. While 330nm SiO2 particle arrays reveal perpendicular magnetic anisotropy with a remanence of almost one and a coercivity of 370mT, on 160nm particles, the FePt caps show a (111) texturing, leading to the random orientation of the easy axis of the magnetization.
American Institute of Physics
Publication date: 
1 Mar 2008

D Makarov, C Brombacher, F Liscio, M Maret, M Parlinska, S Meier, P Kappenberger, Manfred Albrecht

Biblio References: 
Volume: 103 Issue: 5 Pages: 053903
Journal of Applied Physics