Patent ID: 6195870
Filing Date: 2001-03-06
Classification: H01L,Y10T

Abstract:
A process of preparing a high temperature oxide superconductive tape comprising:heating an oxide superconductive precursor tape at ambient pressure and at temperatures of from about 810.degree. C. to about 840.degree. C. for a period of time;pressing said oxide superconductive precursor tape under high pressure of greater than about 0.1 Gpa at ambient temperature;heating said oxide superconductive precursor tape under low uniaxial pressures insufficient to deform said oxide superconductive precursor tape at temperatures of from about 810.degree. C. to about 840.degree. C. for periods of time from about 100 hours to about 200 hours to form a resultant high temperature oxide superconductive tape, whereby said resultant high temperature oxide superconductive tape is characterized as having a larger critical current density (J.sub.c) and critical current (I.sub.c) than an identical high temperature oxide superconductive tape processed in the absence of low uniaxial pressure during heating.