Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1991-06-06
1993-11-09
Beck, Shrive
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505742, 505730, 427 62, 427343, 20429819, 20429821, 20419224, B05D 512
Patent
active
052602516
ABSTRACT:
A process for making a superconducting Tl--Pb--Sr--Ca--Cu--O thin film comprised of at least one phase of the formula Tl.sub.0.5 Pb.sub.0.5 Sr.sub.2 Ca.sub.1+n Cu.sub.2+n O.sub.7+2n where n=0, 1 or 2. The process comprises sputtering an oxide film onto a dielectric substrate from an oxide target containing preselected amounts of Tl, Pb, Sr, Ca and Cu, and heating an oxygen-containing atmosphere in the deposited film in the presence of a source of thallium oxide and lead oxide and cooling the film.
REFERENCES:
patent: 4894361 (1990-01-01), Subramanian
Shah et al, "Fabrication of Tl--Ba--Ca--Cu--O Films by Annealing Rf-Sputtered Ba-Ca--Cu--O Films in Thallium Oxide Vapors", Appl. Phys. Lett. 56(8) Feb. 1990, pp. 782-784.
Subramanian et al, "Bulk Superconductivity up to 122K in the Tl--Pb--Sr--Ca--Cu--O System," Science, vol. 242, Oct. 1988, pp. 249-252.
Takano et al, "Annealing in PbO Atmosphere for High Tc Superconductivity of Bi--Sr--Ca--Cu--O Films," Appl. Phys. Lett. 55(8) Aug. 1989, pp. 798-800.
Hammond et al, "Epitaxial Tl.sub.2 CaBa.sub.2 Cu.sub.2 O.sub.8 Thin Films with Low 9.6 GHz Surface Resistance at High Power and Above TIK", Appl. Phys. Lett. 57(8) Aug. 1990 pp. 825-827.
Lin et al, "Forming Superconducting Tl--Ca--Ba--Cu--O Thin Films by the Diffusion Method," Jpn. J. Appl. Phys. 28(1) Jan. 1989 pp. L85-87.
Qiu et al, "Formation of Tl--Ca--Ba--Cu--O Films by Diffusion of Tl into Rf-Sputtered Ca--Ba--Cu--O," Appl. Phys. Lett. 53(12) Sep. 1988 pp. 1122-1124.
Ianno, SPIE Proceedings vol. 1187 (1989) pp. 66-83.
Laubacher et al., IEEE Trans Magn. MAG-27, p. 1418 (1991).
Lee et al., Appl. Phys. Lett. 53, p. 329 (1988).
Holstein et al., IEEE Trans Magn. MAG-27(2), pp. 1568-1572 (1991).
Nabatane et al., Jap. J. Appl. Phys. 29, pp. 4813 (1990).
Doss et al., Supercond. Sci. Technol. 2, p. 63 (1989).
Portis et al, J. Superconductivity 3, p. 297 (1990).
Yeshurun et al., Phys. Ref. Lett. 60, p. 2202 (1988).
Flippen et al., J. Appl. Phys. 67, p. 4515 (1990).
Lyons et al., Microwave Journal 33, p. 85 (1990).
Withers et al., Solid State Technology 33, pp. 83-87 (1990).
Kountz Dennis J.
Pellicone Frank M.
Beck Shrive
E. I. Du Pont de Nemours and Company
King Roy V.
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