Method for making oriented bismuth and thallium superconductors

Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k

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505725, 505739, 505782, 505783, C01B 1314, C01F 1102, C01G 302, B28B 100

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active

051496879

ABSTRACT:
An oriented superconducting material may be made by cold pressing a nonoriented superconducting material selected from the group consisting of Bi.sub.1, Bi.sub.2, Tl.sub.1, Tl.sub.2, Pb substituted Bi.sub.1, Pb substituted Bi.sub.2, Pb substituted Tl.sub.1, and Pb substituted Tl.sub.2 superconductor materials at a pressure sufficient to form an oriented superconducting material.

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Liang "Structural Characterization of TlCaBaCuO oxide . . . " Appl. Phys. Lett. vol. 53(15) Oct. 10, 1988, pp. 1434-1436.
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"Anisotropy in an Oriented Ba.sub.2 YCu.sub.3 O.sub.7 Superconductor", by Lynds et al., J. Am. Ceram. Soc., 71 [3] C-130 to C-132 (1988).
"Studies on Anisotropic Upper Critical Fields of HoBa.sub.2 U.sub.3 O.sub.7 and ErBa.sub.2 Cu.sub.3 O.sub.7 Using Preferentially Oriented Pellets", by Takita et al.

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