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Cubic phase in the Y-Ba-Cu-O system

Journal Article · · Physical Review, B: Condensed Matter; (USA)
; ;  [1]
  1. Corporate Research Laboratories, Eastman Kodak Company, Rochester, New York 14650-2011 (US)

A metastable phase in the Y-Ba-Cu-O system has been discovered. The phase is closely related to the high-{ital T}{sub {ital c}} superconductors and is characterized by a simple-cubic perovskite structure with a lattice parameter of 3.897 A. A composition Y:Ba:Cu:O=1.18:1.97:3.05:6.95 was determined using ion-backscattering spectrometry. The material is a black semiconductor and shows no transition to superconductivity down to 4 K. It is an excellent candidate for use in heteroepitaxial structures with the family of rare-earth--alkaline-earth--cuprate superconductors. The cubic phase was prepared as a thin film by excimer-laser ablation.

OSTI ID:
5811212
Journal Information:
Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:13; ISSN 0163-1829; ISSN PRBMD
Country of Publication:
United States
Language:
English