COPRECIPITATION PROCESS FOR THE PREPARATION OF SUPERCONDUCTIVE BI-SR-CA-CU OXIDES
Journal
Materials Letters
Journal Volume
9
Journal Issue
2-3
Pages
105-108
Date Issued
1990
Author(s)
Abstract
BiSrCaCu superconducting oxide powders were prepared from an aqueous solution containing Bi, Sr, Ca, and Cu salts and oxalic acid via coprecipitation using triethyl amine as a base. The dried precipitate was found to have a satisfactory stoichiometry and a particle size of 0.3 μm. Subsequent calcination at 800°C for 10 h and sintering at 870°C for 12 h yielded a superconducting phase with Tc above 80 K. This process can be employed for large-scale preparation of BiSrCaCuO superconducting. © 1990.
SDGs
Type
journal article