Preparation and magnetic properties of oxygen deficient EuTiO3-δ thin films

We have prepared EuTiO3-delta epitaxial thin films on SrTiO3 (001) substrates by a pulsed laser deposition technique and examined their magnetic properties. By controlling the oxygen pressure and substrate temperature, EuTiO3-delta films are epitaxially grown on the substrates. The resultant films exhibit ferromagnetic behavior with Curie temperature of 5K. Such magnetic properties are similar to those for La- and Gd-substituted EuTiO3 single crystal, in which the Ruderman-Kittel-Kasuya-Yoshida (RKKY) interaction between localized spins of magnetic ions brings about the ferromagnetic ordering. (c) 2006 Elsevier B.V. All rights reserved.