Superconductor technology: apparatus – material – process – Processes of producing or treating high temperature... – Coating
Patent
1994-07-05
1996-04-16
King, Roy V.
Superconductor technology: apparatus, material, process
Processes of producing or treating high temperature...
Coating
505474, 505475, 505238, 505501, 427 62, 4274193, H01L 3924
Patent
active
055082556
ABSTRACT:
The present invention comprises a high quality, epitaxial thallium-based HTS thin film on MgO and other substrates and methods of providing the same. The present invention is achieved using a nucleation layer which provides a template for subsequent growth. Specifically, YBCO and/or YBCO analog films (films having growth characteristics and physical structures analogous to YBCO) are used as nucleation layer(s) on MgO and other substrates to enable the growth of epitaxial thallium-based HTS films.
REFERENCES:
patent: 5071830 (1991-12-01), Olson et al.
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Cheung et al, "Reproducible growth of high quality YBa.sub.2 Cu.sub.3 O.sub.7-x film on (100) MgO with a SrTiO.sub.3 buffer layer by pulsed laser deposition", Appl. Phys. lett. 60(25), Jun. 1992, pp. 3180-3182.
Liou et al, Appl. Phys. lett. 60(22) Jun. 1992, pp. 2803-2805.
Holstein et al, Appl. Phys. lett. 61(8) Aug. 1992, pp. 982-984.
Hedges et al, Electron. lett., 27(25) 1991, pp. 2312-2313.
"Crystallography and Microstructure of TI-Ca-Ba-Cu-O Superconducting Oxides," Appl. Phys. Lett. 53(5), Aug. 1, 1988, pp. 432-434, Beyers, et al.
"Preparation of Supercondcuting TI-Ca-Ba-Cu Thin Films by Chemical Deposition," App. Phys. Lett. 55(2), Jul. 10, 1989, pp. 188-190, Olson, et al.
King Roy V.
Superconductor Technologies Inc.
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