FLUX-DENSITY DISTRIBUTION IN YBA2CU3OX THIN-FILMS DETERMINED BY USE OF THE FARADAY-EFFECT IN IRON-GARNET FILMS

被引:16
作者
YOKOYAMA, Y
HASUMI, Y
OBARA, H
SUZUKI, Y
KATAYAMA, T
GOTOH, S
KOSHIZUKA, N
机构
[1] MEIJI UNIV,FAC SCI & TECHNOL,KAWASAKI 214,JAPAN
[2] SUPERCOND RES LAB,KOTO KU,TOKYO 135,JAPAN
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1991年 / 30卷 / 4B期
关键词
Y-BA-CU-O; FARADAY ROTATION; GARNET FILM; CRITICAL CURRENT DENSITY; MAGNETIZATION;
D O I
10.1143/JJAP.30.L714
中图分类号
O59 [应用物理学];
学科分类号
摘要
The flux penetration and trapping behavior in superconducting YBa2Cu3O(x) films have been observed quantitatively by means of the magnetooptical Faraday effect in iron garnet films with perpendicular magnetization. The mazelike domain pattern of the iron garnet film placed on the superconducting film is affected by the flux in the superconducting film and is observed using a polarizing microscope. Bi- and Ga-substituted YIG films grown by the liquid-phase epitaxy (LPE) method provide suitable characteristics at low temperature for this technique. Flux density profiles are obtained quantitatively for the disk-shaped YBa2Cu3O(x) film. The critical current density is also determined from the profiles.
引用
收藏
页码:L714 / L717
页数:4
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