Thin film growth and magnetic anisotropy of epitaxial Sr0.775Y0.225CoO3-delta

Abstract

Epitaxially oriented (10 0) and (111) Sr0.775Y0.225CoO3-delta thin films were grown on single crystal (10 0) and (111) SrTiO3 substrates by the pulsed laser deposition method. We observed the relatively small strain and the ferromagnetism with the relatively large grains in the epitaxial (111) Sr0.775Y0.225CoO3-delta thin film at room temperature. However, the epitaxial (1 0 0) Sr0.775Y0.225CoO3-delta thin film showed the relatively high strain along the in-plane orientation and the superparamagnetic property with the relative small grains. (C) 2008 Elsevier B.V. All rights reserved.