Barrier layer containing conductive articles

Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k

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505701, 505702, 505703, 505704, 428426, 428432, 428433, 428688, 428700, 428901, 428930, B32B 302

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active

050175513

ABSTRACT:
A circuit element is disclosed comprised of a substrate and an electrically conductive layer located on the substrate. The electrically conductive layer is comprised of a crystalline rare earth alkaline earth copper oxide. The substrate is formed of a material which increases the electrical resistance of the conductive layer when in contact with the rare earth alkaline earth copper oxide during crystallization of the latter to an electrically conductive form. A barrier layer is interposed between the electrically conductive layer and the substrate. The barrier layer contains magnesium, a group IVA metal, or a platinum group metal, either in an elemental state or in the form of an oxide or silicide. The circuit element is produced by first forming the barrier layer on the substrate followed by coating conductor precursor metal-ligand compounds of each of rare earth, alkaline earth, and copper containing at least one thermally volatilizable ligand and heating the precursor metal-ligand compounds in the presence of oxygen to produce a crystalline rare earth alkaline earth copper oxide electrically conductive layer.

REFERENCES:
patent: 3873341 (1975-03-01), Janus
patent: 4239816 (1980-12-01), Breininger et al.
patent: 4316785 (1982-02-01), Suzuki et al.
patent: 4395436 (1983-07-01), Bianchi et al.
patent: 4401474 (1983-08-01), Donley
patent: 4418099 (1983-11-01), Cuevas et al.
patent: 4485094 (1984-11-01), Pebler et al.
patent: 4496398 (1985-01-01), Whitehouse
patent: 4507643 (1985-03-01), Sunano et al.
patent: 4882312 (1989-11-01), Mogro-Campero et al.
Applied Phys. Letts. 55(5), 7-31-89, Chu et al., pp. 492-494.
Applied Phys. Letts. 53(25), 12-19-88, Mogro-Campero et al., pp. 2566-2568.
J. G. Bednorz and K. A. Muller, "Possible High T.sub.c Superconductivity in the Ba-La-Cu-O System", Z. Phys. B.--Condensed Matter, vol. 64, pp. 189-193 (1986).
C. W. Chu, P. H. Hor, R. L. Meng, L. Gao, Z. J. Huang, and Y. Q. Wang, "Evidence for Superconductivity above 40 K in the La-Ba-Cu-O Compound System", Physical Review Letters, vol. 58, No. 4, pp. 405-407, Jan. 1987.
C. W. Chu, P. H. Hor, R. L. Meng, L. Gao, and Z. J. Huang, "Superconductivity at 52.5 K in the Lanthanum-Barium-Copper-Oxide System", Science Reports, vol. 235, pp. 567-569, Jan. 1987.
R. J. Cava, R. B. vanDover, B. Batlog, and E. A. Rietman, "Bulk Superconductivity at 36 K in La.sub.1.8 Sr.sub.0.2 CuO.sub.4 ", Physical Review Letters, vol. 58, No. 4, pp. 408-410, Jan. 1987.
J. M. Tarascon, L. H. Greene, W. R. McKinnon, G. W. Hull, and T. H. Geballe, "Superconductivity at 40 K in the Oxygen-Defect Perovskites La.sub.2-x Sr.sub.x CuO.sub.4-y ", Science Reports, vol. 235, pp. 1373-1376, Mar. 13, 1987.
M. K. Wu, J. R. Ashburn, C. J. Torng, P. H. Hor, R. L. Meng, L. Gao, Z. J. Huang, Y. Q. Wang, and C. W. Chu, "Superconductivity at 93 K in a New Mixed-Phase Y-Ba-Cu-O Compound System at Ambient Pressure", Physical Review Letters, vol. 58, No. 9, pp. 908-910, Mar. 2, 1987.
M. Itoh and H. Ishigaki "Preparation of Superconducting Y-Ba-Cu-O Thick Film", Japanese Journal of Applied Physics, vol. 27, No. 3, Mar. 1988, pp. L420-L422.
Kawasaki et al. "Compositional and Structural Analyses for Optimizing the Preparation Conductions of Superconducting (La.sub.1-x Sr.sub.x)CuO.sub.4-8 Films by Sputtering", Japanese Journal of Applied Physics, Part 2, vol. 26, No. 4, Apr. 1987, pp. L388-L390.
Koinuma et al. "Preparation of (La.sub.1-x Sr.sub.x).sub.2 CuO.sub.4-8 Superconducting Films by Screen Printing Method", Japanese Journal of Applied Physics, Part 2, vol. 26, No. 4, Apr. 1987, pp. L399-L401.
Meng et al., "High T.sub.c Superconducting Thin Films by Chemical Spray Deposition", International Journal of Modern Physics B, vol. 1, No. 2 (1987) pp. 579-582.
Vest et al., "Synthesis of Metallo-organic Compounds for MOD Powders and Films", MRS Proceedings, Symposium L. Defect Properties and Processing of High Technology Non-Metallic Materials, Boston, MA, Dec. 2-4, 1985.

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