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Step-induced uniaxial magnetic anisotropy of La:67Sr:33MnO3 thin films

2005; American Institute of Physics; Volume: 87; Issue: 24 Linguagem: Inglês

10.1063/1.2143136

1520-8842

M. Mathews, F.M. Postma, J.C. Lodder, R. Jansen, Guus Rijnders, Dave H. A. Blank,

Multiferroics and related materials

The magnetic anisotropy of epitaxial La0.67Sr0.33MnO3 (LSMO) thin films on vicinal, TiO2-terminated SrTiO3 substrates is investigated. Atomic force microscopy shows a regular step-terrace structure on the LSMO surface which is a replication of the surface of the substrate. The films show in-plane uniaxial magnetic anisotropy at room temperature, with the easy axis along the step direction. At low temperature the films show biaxial crystalline anisotropy with easy axes along [110], and hard axes along the [100] direction of LSMO.