A high temperature superconducting system comprising M-R-Tl-Sr-Cu-O wherein: M is at least one compound selected from the group consisting of Hg, Pb, K, and Al; and R represents rare earth metals. In one embodiment, a composition forms a 93 K superconducting phase having the composition: M-R-Tl-Sr-Cu-O wherein: M is selected from the group consisting of Hg and Al; and R is a rare earth metal. In another embodiment, the composition comprises M-R-Tl-Sr-Cu-O wherein: M is selected from the group of Pb and/or K; and R is a rare earth metal.
University of Arkansas (Little Rock, AR)
Sheng, Zhengzhi; Meason, John; and Xin, Ying, "(Hg or Pb)-Pr-Tl-Sr-Cu-O based superconductors" (1996). Patents Granted. 212.