Oriented superconductor containing a dispersed non-superconducti

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

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252521, 423604, 423635, 501123, 501152, 505785, C01F 1102, C01F 1700, C01G 302, H01L 3900

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active

050844369

ABSTRACT:
An oxide superconductor comprising a matrix of plate crystals of the formula REBa.sub.2 Cu.sub.3 O.sub.7-y wherein RE is at least one member selected from the group consisting of Y, La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, and Lu, and y is the amount of oxygen deficiency, oriented and overlaid one on another, and granular crystals of the formula RE.sub.2 BACuO.sub.5 wherein RE is as defined above, insularly dispersed in the matrix in an amount of at least 0.1 mol per mol of the REBa.sub.2 Cu.sub.3 O.sub.7-y crystals.

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Liu, "Superconductivity and Structure of Single X'tal Y Ba.sub.2 Cu.sub.3 O.sub.x ", Physic Lett. A, v. 121(6), May 4, 1987, pp. 305-306.
Hidaka, "Anisotrophy of the Upper Critical Magnetic Field . . . ", Jap. Jnl. Appl. Phys., v. 26(5), May 1987, pp. L726-728.
Ekin, "Transport Critical Current in Bulk Sintered BYa.sub.2 Cu.sub.3 O.sub.x ", Adv. Ceramic Mat'ls, v. 2. (3B) Special Issue, Jul. '87, p. 586.
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High Tc Update, v. 3(8) DOE, Apr. 15, 1989.

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