Title :
Magnetic and magneto-optical properties of Ca-doped Bi-YIG sputtered films
Author :
Hirano, T. ; Hotaka, H. ; Komuro, E. ; Namikawa, T. ; Yamazaki, Y.
Author_Institution :
Toppan Printing Co. Ltd., Saitama, Japan
fDate :
9/1/1992 12:00:00 AM
Abstract :
Ca-doped Bi-YIG films were prepared by RF-sputtering, and their magnetic and magnetooptical properties in the visible wavelength region have been investigated. The films were deposited on vitreous SiO2 and Corning 7059 glass substrates at 400°C. The sputtering was conducted with an Ar pressure of 6.7 Pa, a deposition rate of 3.3 nm/min, and a RF-power density of 2.5 W/cm2. The deposited films annealed in air at 500~700°C were determined to be the garnet phase, and they showed large saturation magnetizations greater than 100 emu/cm3. The magnetization of Ca doped films was constant in the range of Ca ratio x=0.0~1.0; however, the θF decreased with x in the same composition range. It was found that the θF of Bi2YCaFeyO 12 films increased, while the Ms of the films decreased, in the composition range of y=3.5~5.0
Keywords :
bismuth compounds; calcium compounds; ferrimagnetic properties of substances; garnets; magnetic thin films; magnetisation; magneto-optical effects; sputtered coatings; yttrium compounds; 400 degC; 500 to 700 degC; 6.7 Pa; Bi2YCaFeyO12 films; Corning 7059 glass substrates; RF-power density; RF-sputtering; SiO2 substrate; annealing; deposition rate; garnet phase; garnets; magnetic properties; magneto-optical properties; preparation; saturation magnetizations; sputtered films; visible wavelength region; Annealing; Argon; Garnet films; Magnetic field measurement; Magnetic films; Magnetic properties; Magnetooptic effects; Optical films; Substrates; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
