Superconducting YBaCuO thin films by Cu-ion implantation
We have investigated the fabrication of thin-film superconductors by Cu-ion implantation into initially Cu-deficient Y(BaF{sub 2})Cu thin films. The precursor films were co-evaporated on SrTiO{sub 3} substrates, and subsequently implanted to various doses with 400 keV {sup 63}Cu{sup 2+}. Implantations were preformed at both LN{sub 2} temperature, and at 380{degree}C. The films were post-annealed in oxygen, and characterized as a function of dose by four-point probe analysis, x-ray diffraction, ion-beam backscattering and channeling, and scanning electron microscopy. It was found that a significant improvement in film quality could be achieved by heating the films to 380{degree}C during the implantation. The best films became fully superconducting at 60--70 K, and exhibited good metallic R vs. T. behavior in the normal state. 14 refs., 2 figs., 1 tab.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- Sponsoring Organization:
- DOE/AD
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6445792
- Report Number(s):
- LA-UR-90-4069; CONF-901105-35; ON: DE91004867; TRN: 91-000549
- Resource Relation:
- Conference: Fall meeting of the Materials Research Society, Boston, MA (USA), 24 Nov - 1 Dec 1990
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HIGH-TC SUPERCONDUCTORS
ION IMPLANTATION
BARIUM COMPOUNDS
COPPER IONS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
SCANNING ELECTRON MICROSCOPY
STRONTIUM COMPOUNDS
SUPERCONDUCTING FILMS
TEMPERATURE DEPENDENCE
THIN FILMS
TITANIUM OXIDES
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
COHERENT SCATTERING
COPPER COMPOUNDS
DIFFRACTION
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
FILMS
IONS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SUPERCONDUCTORS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656003 - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-)