Formation of oriented high T sub c superconducting Bi-Sr-Ca-Cu-O thin films on silver substrates by organometallic chemical vapor deposition

Journal Article · Mon Mar 05 04:00:00 EST 1990 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.102597· OSTI ID:7007592

Zhang, J M; Wessels, B W; Tonge, L M; Marks, T J ^[1]

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1. Northwestern University, Evanston, Illinois 60208 (US)

Highly oriented thin films of the high {ital T}{sub {ital c}} Bi-Sr-Ca-Cu-O superconductor have been deposited on silver substrates by low-pressure organometallic chemical vapor deposition. The volatile metalorganic complexes Cu(acetylacetonate){sub 2}, Sr(dipivaloylmethanate){sub 2}, Ca(dipivaloyl methanate){sub 2}, and triphenyl bismuth are used as precursors with N{sub 2}O as a reactant gas. X-ray diffraction measurements reveal that the films deposited at 625 {degree}C contain a mixture of the Bi{sub 2}(Sr,Ca){sub 2}CuO{sub {ital x}} and Bi{sub 2}(Sr,Ca){sub 3}Cu{sub 2}O{sub {ital x}} phases. The post-annealed films are predominantly composed of the Bi{sub 2}(Sr,Ca){sub 3}Cu{sub 2}O{sub {ital x}} phase with preferential orientation of the crystallite {ital c} axes perpendicular to the substrate surface. Magnetic susceptibility measurements indicate the superconducting onset temperature of the annealed films to be at 80 K. The zero-field critical current density, estimated from magnetization measurements, is {similar to}3.9{times}10{sup 5} A/cm{sup 2} at 5.5 K.

• OSTI ID: 7007592
• Journal Information: Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 56:10; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENT DENSITY
CURRENTS
DATA
DEPOSITION
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
FABRICATION
FILMS
HEAT TREATMENTS
HIGH TEMPERATURE
INFORMATION
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETIZATION
METALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SILVER
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
SURFACE COATING
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ULTRALOW TEMPERATURE
X-RAY DIFFRACTION