Accession Number:

ADD014490

Title:

Method of Preparing Superconducting 'Orthorhomibic' -Type Compounds in Bulk Using C1-C6 Alkanoic Acid Salts.

Descriptive Note:

Patent, filed 29 Feb 88, Patented 13 Feb 90,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1990-02-13

Pagination or Media Count:

7.0

Abstract:

Superconducting compositions of the general formula AnQmCu3Oy are prepared by wet mixing a combination organic acid salts, inorganic acid salts and oxides of A, Q and Cu, wherein at least one salt is an organic acid salt, drying the mixed salts, and then heating the resultant mixed salts to a temperature between 500 and 950 C. The temperature is maintained for a time sufficient to form a substantially orthorhombic superconducting composition. The method achieves good results with only one heating step. The presence of at least one organic salt causes carbonate and nitrate salts of A, Q and Cu to convert to oxides at temperatures between 300 and 400 C. With lower processing temperatures, semiconductor materials and superconducting materials can be processed together. Keywords Patents. AW

Subject Categories:

  • Electricity and Magnetism
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE