High Tc superconducting devices on bi-crystal substrates

Active solid-state devices (e.g. – transistors – solid-state diode – Thin active physical layer which is – Tunneling through region of reduced conductivity

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257 35, 505190, 505234, 505239, H01L 2906, H01L 3922, H01B 1200, H01F 600

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active

055436307

ABSTRACT:
The edge-defined, film-fed growth technique process is modified to produce a thin ribbon of bi-crystalline sapphire wherein the grain boundary is an essentially straight boundary and the angle is predetermined by selective cutting of the two seeds which are placed closely together during growth. The angle selection is optimized based on the superconducting material to be deposited and the application intended. After the ribbon is pulled, the ribbon is processed by cutting an appropriate section therefrom with the grain boundary. The substrate is polished and the high Tc superconducting material is deposited thereon to produce devices which rely on weak link Josephson junctions.

REFERENCES:
patent: 3650703 (1972-03-01), Labelle, Jr. et al.
patent: 3868228 (1975-02-01), Mlavsky et al.
patent: 3915656 (1975-10-01), Mlavsky et al.
patent: 3915662 (1975-10-01), Labelle et al.
patent: 3953174 (1976-04-01), LaBelle, Jr.
patent: 4028059 (1977-06-01), LaBelle, Jr. et al.
patent: 5077266 (1991-12-01), Takagi et al.
Char et al, "Bi-epitaxial grain boundary junctions in YBaCuO," Appl. Phys. Lett., vol. 59, No.5, Aug. 1991, pp. 733-735.
Char et al, "Propeties of epitaxial YBaCuO thin films on A1203 {1012}," Appl. Phys. Lett., Vol. 56, No. 8, Feb. 1990, pp. 785-787.
Amrein. T., et al, "Thin film Bi.sub.2 Sr.sub.2 CaCu.sub.2 O.sub.8+x Josephson junctions and direct current superconducting quantum interference devices on (001) SrTiO.sub.3 bicrystals", Appl. Phys Lett 63 (14) 4 Oct. 1993, pp. 1978-1980.
Chalmers, Bruce, "Edge-Defined, Film-Fed Crystal Growth", Journal of Crystal Growth 13/14 (1972) pp. 84-87.
Treatise on Materials Science and Technology, vol. 8, Pande, C.S., et al "Growth, Structure, and Mechanical Behavior of Bicrystals", pp. 73-87.

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