Superconductor technology: apparatus – material – process – High temperature – per se – Copper containing
Patent
1993-03-22
1994-10-11
King, Roy V.
Superconductor technology: apparatus, material, process
High temperature , per se
Copper containing
505776, 505785, 252521, 252518, 423593, 423635, H01B 106
Patent
active
053547330
ABSTRACT:
An oxide superconductor contains carbonate radicals and compositions represented by the general formula (Ba.sub.1-x Sr.sub.x).sub.2 Cu.sub.1+y C.sub.w O.sub.3+Z, wherein x, y, w and z satisfy the following relations: 0.25.ltoreq.x.ltoreq.0.64, -0.11.ltoreq.y.ltoreq.0.77, 0.89.ltoreq.w.ltoreq.1.77 and 1.67.ltoreq.z.ltoreq.4.33. The superconductor has a transition temperature of 20 K. or higher and a coherence length of 30 .ANG..
REFERENCES:
Izumi et al., "The crystal structure of the superconducting copper oxide carbonate (Ba.sub.1-x Sr.sub.x).sub.2 Cu.sub.1+y O.sub.2y+2+z (CO.sub.3).sub.1-y ", Physica C 196(1992) pp. 227-235.
Chaillout et al., "Synthesis and crystal structure of BaSrCuO.sub.2+x CO.sub.3 " Physica C 195 pp. 335-344.
Armstrong et al., "Synthesis and Structure of Sr.sub.1.5 Ba.sub.0.5 CuO.sub.2 (CO.sub.3): An oxycarbonate containing infinite CuO.sub.2 layers", Journal of Solid State Chemistry 98(2), Jun. 1992, pp. 432-436.
Kinoshita et al., "A new copper oxide superconductor containing carbon", Nature, vol. 357, May 1992, pp. 313-315.
K. Osamura et al., "Crystal Structure of Ternary Ba.sub.8 YCu.sub.4 O.sub.16-d Phase", Japanese Journal of Applied Physics, vol. 26, No. 12, Dec., 1987, pp. L2094-L2096.
T. G. Narendra Babu et al., "Synthesis, Structure and Electrical Properties of Sr.sub.2 CuO.sub.2 (CO.sub.3), an Oxide Carbonate related to Perovskite", J. Mater. Chem., 1991, (14), pp. 677-679.
Hirai et al., Nikkei Chyodendo, Feb. 3, 1992, pp. 6-7.
Kinoshita Kyoichi
Yamada Tomoaki
King Roy V.
Nippon Telegraph and Telephone Corporation
LandOfFree
Copper oxide superconductor containing carbonate radicals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Copper oxide superconductor containing carbonate radicals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Copper oxide superconductor containing carbonate radicals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1658627