A high temperature superconducting system has the general composition Tl-R-X-Y, wherein: R is a Group 2A element; X is a Group 1B element; and Y is a Group 6A element. Preferably, the composition has the following formula Tl-Ba-Cu-O. The high temperature superconductor of the present invention has a transition temperature of about 90 K with the probability of one phase superconducting at a temperature perhaps as high as 270 K. Processes for making the high temperature superconductor are also provided.
University of Arkansas (Little Rock, AR)
Sheng, Zhengzhi and Hermann, Allen M., "High temperature superconductor system comprising Tl2 Ba2 CuO6 + delta" (1993). Patents Granted. 232.