Superconducting YBaCuO thin films by Cu-ion implantation
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (US)
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 performed 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 made became fully superconducting at 60--70 K, and exhibited good metallic {ital R} vs {ital T} behavior in the normal state.
- OSTI ID:
- 5979633
- Journal Information:
- Journal of Applied Physics; (USA), Vol. 69:4; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BARIUM OXIDES
ION IMPLANTATION
COPPER OXIDES
YTTRIUM OXIDES
ANNEALING
HIGH-TC SUPERCONDUCTORS
ION CHANNELING
SCANNING ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
CHANNELING
COHERENT SCATTERING
COPPER COMPOUNDS
DIFFRACTION
ELECTRON MICROSCOPY
HEAT TREATMENTS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
SCATTERING
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication