Protection of oxide superconductor
AssigneeFujitsu Limited
InventorsKyung-ho Park, Nagisa Ohsako
Life of this patent
Estimating the term…
Abstract
A high temperature oxide superconductor is efficiently protected from the affects of water and acids by forming a passivation layer of a fluoride. The fluoride layer comprises a fluoride composed of one or more elements composing the oxide superconductor and/or one or more elements that can compose an oxide superconductor by replacing at least in part one or more elements composing the oxide superconductor.
Claims20
An oxide superconductor comprising a substrate, a layer of an oxide superconductor, and an outermost layer of a fluoride, said layer of oxide superconductor being one selected from the group consisting of R—Ba—Cu—O system and R— (Sr or Ca) —Cu—O system superconductors wherein R represents yttrium, said fluoride being a fluoride of one or more elements selected from the group consisting of R, Ba and Cu when said oxide superconductor is R—Ba—Cu—O system superconductor and R, Sr, Ca and Cu when said oxide superconductor is R—(Sr or Ca)—Cu—O system superconductor.
A superconductor wiring comprising:
- a substrate and a plurality of alternate layers of an oxide superconductor and a fluoride formed on said substrate, an outermost layer being a fluoride layer, so that each of said oxide superconductor layers is covered with said fluoride layer, said oxide superconductor layers as a whole constituting a wiring pattern, said oxide superconductor being one selected from the group consisting of R—Ba—Cu—O system and R—(Sr or Ca)—Cu—O system superconductors wherein R represents yttrium, said fluoride being a fluoride of one or more elements selected from the group consisting of R, Ba and Cu when said oxide superconductor is R—Ba—Cu—O system superconductor and R, Sr, Ca and Cu when said oxide superconductor is R—(Sr or Ca)—Cu—O system superconductor.
An oxide superconductor comprising a substrate, a layer of an oxide superconductor, and an outermost layer of a fluoride, said layer of oxide superconductor being one selected from the group consisting of R—Ba—Cu—O system and R—(Sr or Ca)—Cu—O system superconductors wherein R represents lanthanoids except for Ce and Pr, said fluoride being a fluoride of one or more elements selected from the group consisting of R, Ba and Cu when said oxide superconductor is R—Ba—Cu—O system superconductor and R, Sr, Ca and Cu when said oxide superconductor is R—(Sr or Ca)—Cu—O system superconductor.
A superconductor wiring comprising:
- a substrate and a plurality of alternate layers of an oxide superconductor and a fluoride formed on said substrate, an outermost layer being a fluoride layer, so that each of said oxide superconductor layers is covered with said fluoride layer, said oxide superconductor layers as a whole constituting a wiring pattern, said oxide superconductor being one selected from the group consisting of R—Ba—Cu—O system and R—(SR or Ca)—Cu—O system superconductors wherein R represents lanthanoids except for Ce and Pr, said fluoride being a fluoride of one or more elements selected from the group consisting of R, Ba and Cu when said oxide superconductor is R—Ba—Cu—O system superconductor and R, Sr, Ca and Cu when said oxide superconductor is R—(Sr or Ca)—Cu—O system superconductor.
Dependencies are inferred from the claim text.