Magneto-optic and infrared study of (Y/sub 3-y/Ce/sub y/)(Fe,Ga)/sub 5/O/sub 12/ garnet films. I. Effect of variable Ce content and heat pulse annealing

The Faraday rotation and infrared studies of (Y/sub 3-y/Ce/sub y/)(Fe,Ga)/sub 5/O/sub 12/ (Ce=0 to 20% relative metal content) garnet films deposited on quartz and Gd/sub 3/Ga/sub 5/O/sub 12/ (GGG) are reported. The value of /spl theta//sub f/ reaches a maximum with Ce between 5 and 15%, depending on the heat pulse annealing temperature. The film crystallinity deposited on quartz, analyzed by X-ray diffraction and by sharpening of bands near 500 cm/sup -1/ in FTIR, reaches a maximum with Ce=5% and then decreases. Values of the Faraday rotation are related to the crystallinity of the deposited films.