Superconductor technology: apparatus – material – process – High temperature devices – systems – apparatus – com- ponents,... – High frequency waveguides – resonators – electrical networks,...
Patent
1993-07-29
1994-10-25
King, Roy V.
Superconductor technology: apparatus, material, process
High temperature devices, systems, apparatus, com- ponents,...
High frequency waveguides, resonators, electrical networks,...
505701, 505702, 505238, 428930, 428702, 257728, 333 99S, 343700MSFile, 427 62, H01L 3900
Patent
active
053589262
ABSTRACT:
Novel articles are provided of thin super-conductive thallium-based copper oxide layers on inorganic, usually crystalline substrates. Novel methods are provided for ease of producing such articles, particularly involving sol-gel techniques and laser ablation. The articles have a highly oriented superconductive thallium-based copper oxide film, particularly epitaxial, with high superconductive transition temperatures and desirable electrical properties. The subject articles find use in a wide variety of electronic applications, particularly in microwave and millimeter wave devices.
REFERENCES:
Chen et al, "Superlattice Modulation and Epitaxy of Thallium Barium Calcium Copper Oxide (Tl.sub.2 Ba.sub.2 Ca.sub.2 Cu.sub.3 O.sub.10) Thin Films Grown on Magnesium Oxide and Strontium Titanate Substrates", Appl. Phys. Lett., 54(16) 1989 pp. 1579-1581.
Brice, "Crystal Growth Processes", pp. 213-214, John Wiley and Sons, New York, 1986.
Liu et al, "Epitaxial Growth of High-Tc Superconducting Thallium Calcium Barium Copper Oxide films by Liquid Phase Epitaxial Process", Physica C, 156(5) pp. 785-787, Dec. 1988.
Ginley et al, "Superconducting Thin Films of Thallium Calcium Barium Copper Oxide (Tl.sub.2 Ca.sub.2 Ba.sub.2 Cu.sub.3 Oy) and Tl.sub.2 CaBa.sub.2 Cu.sub.2 Oy", Physica C, 156(4) pp. 592-598, 1988.
Adachi et al, "Superconducting Thin Films of Bi-Sr-Ca-Cu-O and Tl-Ba-Ca-Cu-O with Tc Above Look", Journal of Crystal Growth 9l (1988) Aug. II, No. 3, pp. 352-354.
Lysyak et al, "An Investigation of Thallium (I) Carboxylates by Thermal Analysis and Infrared Spectroscopy", Zh. Neorg. Khim (USSR) vol. 32, No. 3 Mar. 1987 pp. 573-577.
Nasu et al, "Formation of High-Tc Superconducting BiSiCaCu.sub.2 Ox films on ZrO.sub.2/Si (100)", Jpn J. Appl. Phys. 27(4) Apr. 1988 L634-635.
Hamdi et al, "Formation of Thin-Film High Tc Superconductors by Metaorganic Deposition", Appl. Phys. Lett. 51(25) Dec. 1987 pp. 2152-2154.
Gross et al, "Versatile New Metalorganic Process for Preparing Superconducting Thin Films", Appl. Phys. Lett. 52(2) Jan. 1988 pp. 160-162.
Nasu et al, "Superconducting Y-Ba-Cu-O Films with Tc 770K Prepared by Thermal Decomposition Technique of Y-, Ba-, and Cu-2 ethylhexanoates" Chemistry Letters, Oct. 1987 pp. 2403-2407.
Lee et al, "Superconducting Tl-Ca-Ba-Cu-O Thin Films with Zero Resistance at Temperature of up to 120K", Appl. Phys. Lett. 53(4) Jul. 1988 pp. 329-331.
Eddy Michael M.
Hammond Robert B.
James Timothy W.
Olson William L.
Robinson McDonald
King Roy V.
Superconductor Technologies Inc.
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