Synthesis of TlBaCaCuO superconductive films with Tl diffusion into BaCaCu precursors

Abstract

There exists several techniques to synthesize TlBaCaCuO from precursor films.Recently, a two zone furnace technique was developed by DeLuca.' Based on our experience on the two zone furnace technique, we systematically conducted a series of experiments in a tube furnace with a temperature gradient distribution. The BaCaCuO precursor films were fabricated by an ink method, and the TI diffusion source was T1203. Superconductive films were characterized by SQUID magnetization measurement, X-ray diffraction, SEM, and EDS.Experimental results will be summarized.