Thallium barium calcium copper oxide

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Schematic layered structure of TBCCO-2223.

Thallium barium calcium copper oxide, or TBCCO (pronounced "tibco"), is a family of high-temperature superconductors having the generalized chemical formula TlmBa2Can−1CunO2n+m+2.

Tl2Ba2Ca2Cu3O10 (TBCCO-2223) has a critical temperature (Tc) of 127 K, discovered in 1988.[1]


  1. ^ Sheng, Z. Z.; Hermann A. M. (1988). "Bulk superconductivity at 120 K in the Tl–Ca/Ba–Cu–O system". Nature 332 (6160): 138–139. Bibcode:1988Natur.332..138S. doi:10.1038/332138a0. 

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