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

Abstract

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.

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

References in corpus (1)

• Colossal Magnetoresistant Materials: The Key Role of Phase Separation

Cited by in corpus (1)

• Spin states and phase separation in La_{1-x}Sr_{x}CoO_3 (x=0.15, 0.25, 0.35) films: optical, magneto-optical and magneto-transport studies