Versatile new metalorganic process for preparing superconducting thin films

Journal Article · Mon Jan 11 04:00:00 EST 1988 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.99038· OSTI ID:5742208

Gross, M E; Hong, M; Liou, S H; Gallagher, P K; Kwo, J

A new technique for producing thin films of the high-temperature perovskite superconductors, LnBa/sub 2/Cu/sub 3/O/sub 7-//sub x/, where Ln represents a rare-earth element, using spin-on metalorganic precursors is described. Pyrolysis of the spin-coated films, consisting of mixed metal (2-ethyl hexanoates), leads to black films up to several microns thick whose degree of orientation is a function of the processing temperature and duration. Representative films of YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/ on MgO begin to exhibit orientation with the c axis perpendicular to the film plane at heat treatments above 900 /sup 0/C. The superconducting behavior of a highly oriented film produced at 990 /sup 0/C is characterized by T/sub c/(onset) = 89 K, T/sub c/(R = 0) = 77 K, and J/sub c/ = 10/sup 3/ A cm/sup -2/ at 65 K.

• Research Organization: ATandT Bell Laboratories, Murray Hill, New Jersey 07974
• OSTI ID: 5742208
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 52:2; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COATINGS
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CRITICAL TEMPERATURE
CURRENTS
DATA
DECOMPOSITION
DEPOSITION
ELECTRIC CURRENTS
EXPERIMENTAL DATA
FABRICATION
FILMS
INFORMATION
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
ORIENTATION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PYROLYSIS
SPIN-ON COATING
SPIN-ON COATINGS
SUPERCONDUCTING FILMS
SURFACE COATING
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES