Lanthanum: sodium copper superconducting metal oxide composition

Details Lanthanum: sodium copper superconducting metal oxide composition Lanthanum: sodium copper superconducting metal oxide composition

1988-02-04

1989-05-30

Albrecht, Dennis

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

252518, 252521, 423263, 423593, 423604, 423641, 501152, 505809, 505810, 505815, C01D 102, C01F 1700, C01G 302, H01L 3912

Patent

active

048351369

ABSTRACT:
Compositions containing a phase having the formula LA.sub.2-x Na.sub.x CuOz wherein x is about 0.1 to about 0.3 and z is about 3.8 to about 4.2 are superconducting. Processes for manufacturing such compositions and for using them are disclosed.

REFERENCES:
Sleight, A. W.: "High Temperature Superconductivity in Oxides", Chemistry of High-Temperature Superconductors, ACS Symposium Series 351, Aug. 30-Sep. 4, 1987.
Fartash, A. et al.: "Superconductivity in Yi-4, Nay, Ba.sub.2 Cu.sub.3 O.sub.x ", Solid State Comm., v. 68, No. 1, pp. 39-41, Jan. 1988.
Bednorz and Muller, Z. Phys. B64, 189.
Ogita et al., Japn. K. Appl. Phys. 25, L415 (1987).
Fine et al., "Chemistry of High-Temperature Superconductors", ACS Symposium Series 351, Edited by D. L. Nelson, M. S. Whittingham and T. F. George, American Chemical Society, Wash., D.C. (1987) Chapter 10.
Fine et al., Phys. Rev. B 36, 5716 (1987).

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