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

Volume

28

Issue

5

fYear

1992

fDate

9/1/1992 12:00:00 AM

Firstpage

3237

Lastpage

3239

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 θ_F decreased with x in the same composition range. It was found that the θ_F of Bi₂YCaFe_yO ₁₂ films increased, while the M_s 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; Bi₂YCaFe_yO₁₂ 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.179770

Filename

179770