Molecular formula :
nature : a thallium-containing superconducting copper oxide ceramics. Main thallium barium copper and oxygen-thallium barium, calcium and copper both oxygen. The superconducting transition temperature Tc zero resistance at 81K and 125K. The Quartet is a crystal structure, the existence of two types of structure superconducting phase. One of thallium-oxygen single, simple crystalline structure. One of thallium-oxygen double for the body-centered cubic lattice. Using solid phase sintering powder preparation.
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