Magnetic and crystallographic properties of La–Zn substituted Sr-ferrite thin films

La–Zn substituted Sr-ferrite thin films were prepared by rf diode sputtering. The magnetic and crystallographic properties of the films were investigated by vibrating sample magnetometry and x-ray diffractometry. It is found that the texture of the films sensitively depends on the amount of substitution. Both the saturation magnetization Ms and coercivity Hc increase with the increase of La–Zn substitution. The increase of Hc is caused, in part, by the increase of K1 due to the substitution.