High temperature superconductor-strontium titanate sapphire stru

Details High temperature superconductor-strontium titanate sapphire stru High temperature superconductor-strontium titanate sapphire stru

1990-03-16

1992-07-21

Ryan, Patrick J.

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

505701, 505702, 505703, 505704, 428688, 428698, 428701, 428930, B32B 900

Patent

active

051322820

ABSTRACT:
A HTSC layered structure comprising a substrate such as sapphire, a strontium titanate buffer layer and a HTSC film such as YBa.sub.2 Cu.sub.3 O.sub.7 provides a superconductor having lower surface resistance and a narrower transition temperature.

REFERENCES:
Multilayer YBa.sub.2 Cu.sub.3 O.sub.x -SrTiO.sub.3 --YBa.sub.2 Cu.sub.3 O.sub.x Films for Insulating Crossovers, Kingston et al., Applied Physics Letters, Jan. 8, 1990.
YBa.sub.2 Cu.sub.3 O.sub.7 Films Grown on Epitaxial MgO Buffer Layers on Sapphire, Talvacchio et al., Proceedings M.sup.2 S-HTSC, Stanford, Jul. 1989, Physica.
The Sputter Deposition and Characterization of Epitaxial Magnesium Oxide Thin Films and Their Use as a Sapphire/YBCO Buffer Layer, Morris et al., Proc. M.A.S. vol. 169, 1990.
Properties of Epitaxial YBa.sub.2 Cu.sub.3 O.sub.7 Thin Films on Al.sub.2 O.sub.3 (1012), Char et al., Appl. Phys. Lett. 56(8) Feb. 19, 1990, pp. 785-787.
Materials Research Bulletin, vol. 23, No. 8, Aug. 1988, pp. 1159-1162 Hu et al.
Journal of the Less Common Metals, vol. 151, pp. 333-340, Chambonnet et al. May 15, 1989.
Applied Physics Letters, vol. 55, No. 3, Jul. 17, 1989, pp. 295-297 Witanachchi et al.

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