Magnetoresistance and magnetic anisotropy in La$_{0.5}$Sr$_{0.5}$CoO$_{3-δ}$ film

Details Magnetoresistance and magnetic anisotropy in La$_{0.5}$Sr$_{0.5}$CoO$_{3-δ}$ film Magnetoresistance and magnetic anisotropy in La$_{0.5}$Sr$_{0.5}$CoO$_{3-δ}$ film

2002-07-14

arxiv.org/abs/cond-mat/0207346v1

J. Magn. Magn. Mat., 258-259 (2003) 280

Physics

Condensed Matter

Materials Science

3 pages, 4 figures, reported at Moscow Int. Symp. on Magnetism (MISM 2002), June 2002

Scientific paper

10.1016/S0304-8853(02)01095-8

The magnetic and transport properties of La$_{0.5}$Sr$_{0.5}$CoO$_{3-\delta}$ film grown on a LaAlO$_3$ substrate by pulsed-laser deposition are studied. The properties are found to be influenced by a combined influence of the magnetic anisotropy and inhomogeneity. Magnetoresistance anisotropy is determined by the shape anisotropy and the strain-induced magnetic anisotropy due to the film-substrate lattice interaction. Indications of the temperature-driven spin reorientation transition from an out-of plane orderded state at low temperatures to an in-plane ordered state at high temperatures as a result of competition between the mentioned anisotropy sources are found.

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