DocumentCode :
976795
Title :
Submicron bubble garnets and their characterizations
Author :
Ohta, Norio ; Ikeda, Tadashi ; Ishida, Fumihiko ; Sugita, Yutaka
Author_Institution :
Central Research Laboratory, Hitachi Ltd., Kokubunji, Tokyo, Japan
Volume :
16
Issue :
5
fYear :
1980
fDate :
9/1/1980 12:00:00 AM
Firstpage :
610
Lastpage :
615
Abstract :
New Submicron ( 
m diam) bubble garnets have been developed. In order to reduce saturation induction 
as low as possible, suitable choice of amounts of nonmagnetic ions substituting for ferric ions in both tetrahedral and octahedral sites were studied in (YSm)3 (FeAl)5 O12 , (YSmLu)3 - (FeGaSc)5 O12 , (YSmLu)3 (FeAlSc)5 O12 and (LaLuSm)3 - (FeGa)5 O12 garnet systems. For example, in (YSmLu)3 - (FeAlSc)5 O12 a film with the following properties was grown; strip width 
m, film thickness 
m, quality factor 
, Curie temperature 
C and 
G. The temperature properties of those films could be improved drastically by doping with a small amount of Gd ion. Wall mobilities μw of those films are in the region from 200 to 500cm/s/Oe. Preceding these material studies, several film characterization methods have been investigated. Film thickness was measured by Fluorescent X-ray method, strip width by using a highly sensitivity TV camera, and bubble collapse field by FMR resonance technique respectively.
m diam) bubble garnets have been developed. In order to reduce saturation induction as low as possible, suitable choice of amounts of nonmagnetic ions substituting for ferric ions in both tetrahedral and octahedral sites were studied in (YSm) m, film thickness m, quality factor , Curie temperature C and G. The temperature properties of those films could be improved drastically by doping with a small amount of Gd ion. Wall mobilities μw of those films are in the region from 200 to 500cm/s/Oe. Preceding these material studies, several film characterization methods have been investigated. Film thickness was measured by Fluorescent X-ray method, strip width by using a highly sensitivity TV camera, and bubble collapse field by FMR resonance technique respectively.Keywords :
Magnetic bubble films; Cameras; Doping; Fluorescence; Garnets; Magnetic resonance; Q factor; Strips; TV; Temperature; Thickness measurement;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1980.1060788
Filename :
1060788
Link To Document :
