Barium ferrite thin films prepared by alternate deposition

dBaM films with Various compositions were prepared by reactive RF diode spu ttering method. The effects of Ba content on the c-axis orientation, temper ature dependence of the magnetic properties and the microstructure of the f ilms were investigated. Our results show that films with high Ba content te nd to have c-axis normal to the film plane, and have a large Value of dH(C) /dT due to the plate-like grains, while films which have low Ba content ten d to have c-axis in the film plane, and have a small value of dH(C)/dT caus ed by the acicula-shaped grains. (C) 2000 Elsevier Science B.V. All rights reserved.