Magnetotransport and dielectric properties of perovskite ruthenate and titanate thin films

Perovskite thin films of conductive ferromagnetic SrRu O3 and incipient ferroelectric SrTi O3 were epitaxially grown by laser molecular beam technique. The magnetotransport properties of ferromagnetic films were measured by applying the magnetic field within a wide temperature range. We have observed magnetization hysteresis and significant anisotropic magnetotransport behaviors of thin films. The low-frequency dielectric properties of SrTi O3 films were studied. It is found that the microstructures and strain in films may strongly affect the magnetotransport and dielectric properties of perovskite oxides.