The role of deposition conditions on the structure and magnetic properties of SrTi1-xFexO3 films

SrTi1-xFexO3 thin films were grown on Si substrates with a double buffer layer of ceria and yttria-stabilized zirconia at various temperatures, oxygen pressures and Fe contents. Films with in-plane compressive strain and an oxygen deficiency have a strong magnetic anisotropy with an out-of-plane easy axis, whereas films deposited at low temperature and in an oxygen atmosphere have no ferromagnetism at room temperature, which is attributed to the lack of lattice strain. (C) 2012 American Institute of Physics. [doi:10.1063/1.3673415]