CdMnS films were prepared by and co-evaporation

and their properties were studied. The results showed CdMnS are hexagonal structure and possesses ferroelectric properties. A remnant polarization of 1.72 μC/cm2 and coercive field of 14.3 kV/cm. The co-evaporated CdMnS samples become ferromagnetic when doped with Au

with a spontaneous magnetization of 1.39×10-6 emu and a coercive magnetic field of 75.4 gauss at 10 K

and the Curie point was higher than room temperature. Using magnetic force microscopy

we observed clear magnetic clusters with sizes ranging from a few nanometers to 100 nm

and found the magnetization to be highly dependent on Au concentration.