Fabrication of Tl-Ba-Ca-Cu-O films by annealing rf-sputtered Ba-Ca-Cu-O films in thallium oxide vapors

Journal Article · Sun Feb 18 23:00:00 EST 1990 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.103316· OSTI ID:6986138

Shah, S I; Herron, N; Fincher, C R; Holstein, W L ^[1]

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1. Central Research and Development Department, Experimental Station, E. I. du Pont de Nemours and Company, P.O. Box 80356, Wilmington, Delaware 19880-0356 (USA)

Thin, superconducting Tl-Ba-Ca-Cu-O films were grown using a two-step fabrication process which involved the growth of Ba-Ca-Cu-O films by reactive magnetron sputtering followed by {ital ex} {ital situ} high-temperature crystallization and thallination under thallium oxide vapors. Films were thallinated with both Tl{sub 2}O{sub 3} and Tl{sub 2}Ba{sub 2}CuO{sub 6} as the source for thallium oxide vapors. Highly oriented films were obtained with the {ital c} axis perpendicular to the surface of the film. Best films had a {ital T}{sub {ital c}} ({ital R}=0) of 104 K and a critical current density of 5{times}10{sup 4} A/cm{sup 2} at 77 K.

• OSTI ID: 6986138
• Journal Information: Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 56:8; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL GROWTH
CRYSTAL STRUCTURE
CURRENT DENSITY
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EQUIPMENT
EXPERIMENTAL DATA
FABRICATION
FILMS
HEAT TREATMENTS
INFORMATION
LOW TEMPERATURE
MAGNETRONS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SPUTTERING
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
THALLIUM COMPOUNDS
THALLIUM OXIDES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VERY HIGH TEMPERATURE