Small bubble garnet films with collapse-field temperature coefficients ranging from -0.3 to about 0%/°C

Author

Yamaguchi, K. ; Uchishiba, H. ; Suzuki, T.

Author_Institution

Fujitsu Labs Ltd., Kawasaki, Japan

Volume

16

Issue

5

fYear

1980

fDate

9/1/1980 12:00:00 AM

Firstpage

616

Lastpage

618

Abstract

It is confirmed that collapse-field temperature coefficients $\\Delta H_{o}(T)$ of conventional YSmLuCaGeIG (SL) films varied in the range of -0.1 ∼ -0.3 %/°C in proportion to the molar ratio of Lu2O3/Sm2O3in the melt composition. $\\Delta H_{o}(T)$ of the SL system was found to be limited in the range of -0.21 ∼ -0.3 %/°C when considering the lattice parameter matching between GGG substrates and films. To obtain garnet films with $\\Delta H_{o}(T)$ of less than -0.2 %/°C, Er and Gd substituted garnet films were studied. YSmErGdLuCaGeIG films with $\\Delta H_{o}(T)$ of -0.10 %/°C and an YSmErCaGeIG films of -0.06 %/°C were obtained. From the resulting of $\\Delta H_{o}(T)$ and saturation magnetization temperature coefficient $\\Delta M_{s}(T)$ , it was derived that $\\Delta M_{s}(T)$ accounts for most of the $\\Delta H_{o}(T)$ .

Keywords

Magnetic bubble films; Erbium; Ferrites; Garnet films; Lattices; Magnetic field measurement; Saturation magnetization; Semiconductor films; Substrates; Temperature dependence; Temperature distribution;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1980.1060662

Filename

1060662