Rapid synthesis of the Bi-2212 phase by a polymer matrix method

Abstract

A method that leads to the Bi-2212 phase after a short thermal treatment of metal acetates is presented. The thermal treatment consists in a calcination (2 h at + 2 h at ), pressing and sintering (1 or 3 h at ). TGA and DTA provide valuable data about the decomposition of the polymer and metal - polymer complex and the formation and decomposition of the carbonates in the intermediate compounds. In contrast with the most common sol - gel methods, the use of polyethylenimine yields relatively large particles (ca ).