Magnetic properties of SrRu0.9Fe0.1O3 thin films grown on different surfaces of SrTiO3 substrates

Abstract We stabilized SrRu 0.9 Fe 0.1 O 3 single-crystalline films on SrTiO 3 (001) and SrTiO 3 (110) substrates using epitaxial strain during thin-film growth. X-ray diffraction (XRD) θ –2 θ scans showed strong peaks demonstrating single-crystal quality. Fe doping in SrRuO 3 had negative effects on the ferromagnetic properties, such as decreasing the T c and saturated magnetic moment, as well as weakening the ferromagnetism. The negative effects were reduced when a suitable surface of the cubic substrate was selected for thin-film SrRuO 3 growth. We found that the ferromagnetic properties, such as the T c and saturated magnetic moment, differed depending on the substrate surface. The observed differences are discussed in terms of Ru–Ru nearest-neighbor distance.