| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1803010 | Journal of Magnetism and Magnetic Materials | 2009 | 7 Pages |
Epitaxial thin films of CaRu1−xMxO3 (M=Ti, Mn) were fabricated on a (0 0 1)-SrTiO3 substrate by spin-coat method using organometallic solutions (metal alkoxides). Results of X-ray diffraction and transmission electron microscopy indicate that the epitaxial films were grown pseudomorphically so as to align the [0 0 l] axis of the CaRu1−xMxO3 films perpendicular to the (0 0 1) plane of the SrTiO3 substrate. Ferromagnetism and metal–insulator transition are induced by the substitution of transition metal ions. The occurrence of ferromagnetism was explained qualitatively assuming a TiRu6 cluster model for CaRu1−xTixO3 film and a mixed valence model for CaRu1−xMnxO3 film. Ferromagnetism was also observed for layered CaRuO3/CaMnO3 film and CaRuO3/CaMnO3/CaRuO3/CaMnO3 multilayer film and the magnetism was explained by an interfacial exchange interaction model with magnetic Mn3+, Mn4+, and Ru5+ ions.
