The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 24, 2000
Filed:
Jun. 23, 1995
Gerhard Langbein, Arzberg-Adelwitz, DE;
Frank Werfel, Leipzig, DE;
Adelwitz Technologiezentrum GmbH, Adelwitz, DE;
Abstract
The high temperature superconducting material is made from a base material having two opposing surfaces and including a high purity yttrium barium copper oxide compound having a YBa.sub.2 Cu.sub.3 O.sub.7-x (123) composition with silver oxide. The method of making the superconducting material includes controlling a temperature of each opposing surface of the base material to form a time-dependent spatial temperature gradient across the base material; measuring the time-dependent spatial temperature gradient, determining whether it is within a desired range and controlling it so that the time-dependent spatial temperature gradient remains within the desired range, thereby melt-texturing the base material while decomposing the silver oxide into silver and transforming the base material into quasi-crystalline superconducting regions having YBa.sub.2 Cu.sub.3 O.sub.7-x (123) composition, intrinsically non-superconducting material zones consisting of coherent yttrium-rich material having a Y.sub.2 BaCuO.sub.5 (211) composition, and copper-enriched interfacial layers between the quasi-crystalline superconducting regions and the non-superconducting material zones, thereby providing a superconductive material, and then cooling the superconductive material, thereby providing a superconducting material having silver inclusions, the superconducting material having the quasi-crystalline superconducting regions separated from the non-superconducting material zones by the copper-enriched interfacial layers, wherein the copper-enriched interfacial layers function as Pinning centers. A new magnetic bearing based on the superconducting material is also described.