The oxalate coprecipitation method was applied to the preparation of the high-T c superconductor BiSrCaCu 2O x. Crystalline phases obtained by heat treatment were studied in connection with superconducting properties. The pyrolysis of the coprecipitates was completed below 500°C and subsequent heat treatment above 800°C resulted in the formation of the layered structure characteristic of the superconducting phase. The particle shape was of thin flakes. The superconducting phase with T c of 110K was formed by heat treatment just below the melting point, which was enhanced in the melt-cooled sample.
|Number of pages||5|
|Journal||Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy|
|Publication status||Published - Jul 1988|
ASJC Scopus subject areas
- Mechanical Engineering
- Metals and Alloys