Bi oxide superconductors

Details Bi oxide superconductors Bi oxide superconductors

1994-06-14

1996-04-16

Therkorn, Linda Skaling

Superconductor technology: apparatus, material, process

High temperature , per se

Bismuth containing

505125, 505782, 505784, 252521, 423604, H01B 1200, H01L 3912

Patent

active

055082521

ABSTRACT:
A substance which has a Cu--O plane containing crystal structure in its unit cell and which is called a Bi oxide superconductor consisting essentially of Bi, Sr, Ca, Cu, and O. Not only part of Bi but also part of Sr and/or Ca of the Bi oxide superconductor is substituted for Pb and rare earth elements (RE), respectively. The Pb substitution relaxes the structural modulation which is closely related to superconductivity of the Bi oxide superconductor and the RE substitution controls its carrier concentration. Accordingly, superconducting properties such as transition temperature and critical current density can be improved remarkably. In addition, not only oxide superconductors with excellent superconductivity can be prepared in a low oxygen content but also the surface condition of the prepared superconductors is stable.

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