Oxide superconductors encased in pan-derived carbon matrix

Details Oxide superconductors encased in pan-derived carbon matrix Oxide superconductors encased in pan-derived carbon matrix

1989-07-07

1991-06-11

Lieberman, Paul

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

252502, 252506, 252509, 252511, 264 291, 264 296, 264 60, 4234471, 4234475, 4234476, 428408, 428902, 428930, 505739, 505740, 505742, 505785, H01L 3912

Patent

active

050232304

ABSTRACT:
Disclosed is a method of preparing a superconductor wherein a precursor oxide mixture is dispersed in an appropriate polymer matrix and shaped into a predetermined form following which the matrix and oxide precursor are respectively carbonized and sintered simultaneously. An alternate method is to separately prepare a superconducting material from the precursor oxide mixture, grind the superconducting material and add it to a solution containing polyacrylonitrile, shape into a predetermined form, following which the superconducting material and matrix are, respectively, carbonized and then annealed.

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patent: 4904424 (1990-02-01), Johnson
Koinuma et al, Japanese Journal of Applied Physics, vol. 26, No. 4, Apr. 1987, pp. L399-L401.
Ishii et al, Japanese Journal of Applied Physics, vol. 26, No. 12, Dec. 1987, pp. L1959-L1960.
Gupta et al, Applied Physics Letters, 52(23), Jun. 1988, pp. 1987-1988.
Wada et al, Applied Physics Letters, 52(23), Jun. 1988, pp. 1989-1991.

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