Magneto-optical properties of PtMnSb films prepared by facing targets sputtering

Abstract
The magneto‐optical properties of PtMnSb Heusler alloy films prepared by a facing targets sputtering (FTS) system have been studied. The specimen films were deposited onto glass substrates heated between 20 and 350 °C. The films exhibiting diffraction peaks of Clb‐PtMnSb Heusler alloy were obtained at temperatures above 150 °C. The saturation magnetization 4πMs increased with increasing substrate temperature and the maximum value of magnetization was 5.8 kG, which is lower than PtMnSb bulk magnetization. The polar Kerr rotation measured with a He‐Ne laser was evaluated at 1.9° on the glass side when an external dc magnetic field of 7 kOe was applied in a perpendicular direction.