DocumentCode
983282
Title
Creation of a flux-free environment
Author
Habermeier, Hanns-Ulrich ; Chang Tsuei ; Yeh, James T.
Author_Institution
IBM Thomas Watson Research Centre, Yorktown Heights, N.Y. USA
Volume
17
Issue
5
fYear
1981
fDate
9/1/1981 12:00:00 AM
Firstpage
2137
Lastpage
2139
Abstract
For the proper operation of flux sensitive cryogenic devices such as those in Josephson computers a nearly zero field environment is essential. Since shieldings based on ferromagnetic mu-metal has been found to be not effective enough, superconducting shieldings are required. In this paper flux penetration into superconducting disks of ideal and non-ideal shape is investigated with respect to flux free regions in the disk. Based on the experimental results of the linear dimension of flux free belts in disk shaped type-I superconductors an arrangement is proposed to create flux free regions large enough for practical applications.
Keywords
Josephson devices; Belts; Conducting materials; Fingers; Magnetic domains; Magnetic fields; Magnetic flux; Magnetic materials; Optical films; Superconducting magnets; Superconducting materials;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1981.1061389
Filename
1061389
Link To Document