Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1987-12-29
1989-02-07
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
351216, 428930, H01F 700
Patent
active
048034525
ABSTRACT:
A magnetic field shield which is characterized in that it includes at least one composite lamination including a thin film of the superconductor and a metal layer laminated with the thin film of the superconductor having a thickness not more than that obtained at the turning point where the magnetic field shielding effect of a single film of the superconductor changes from an abrupt increase to a gradual increase and the film thickness is less than 2 .mu.m.
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Kawahara Yoshiaki
Saji Yoshiro
Tada Eichi
Toda Hiroaki
Harris George
Koatsu Gas Co., Ltd.
Saji Yoshiro
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