Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1989-06-01
1992-02-11
James, Andrew J.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
357 4, 357 5, H01B 1200, H01L 3912, H01L 2712
Patent
active
050876058
ABSTRACT:
A superconducting device and method of making in which a superconducting YBaCuO layer is laser deposited on a SrTiO.sub.3 or similar substrate such that the c-axis of the YBaCuO layer is vertically aligned with that of the substrate. A non-superconducting layer of PrBaCuO or MgO is laser deposited on the superconducting layer and another superconducting YBaCuO layer is laser deposited on the non-superconducting layer with the c-axes of all the layers being aligned. Contacts are applied to the two superconducting layers to form a junction device across the non-superconducting layer, which acts as a barrier layer.
REFERENCES:
Ohshima et al. "Superconducting and Structural Properties of the New Ba.sub.1-x Ln.sub.x CuO.sub.3-y Compound System" Japanese J. Appl. Phys. vol. 26(5) 5/87 pp. L815-L817.
Rothschild et al., "Laser Patterning of Metal Oxide Superconductor Films by Reactive, Solid-State Transformation" IEEE Electron Dev. Lett., vol. 9(2) 2/88 pp. 68-70.
Linker et al., "Control of Growth Direction of Epitaxial YBaCuO Thin Films on SrTiO.sub.3 Substrates" Solid State Comm. vol. 69(3) pp. 249-253 (1989).
Hegde Manjanath S.
Inam Arun
Rogers, Jr. Charles T.
Venkatesan Thirumalai
Bell Communications Research Inc.
Falk James W.
Guenzer Charles S.
James Andrew J.
Russell Daniel N.
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