The effect of addition of barium, tin and silver, at the expense of bismuth, on the transition temperature and structure of the Bi-Sr-Ca-Cu-O system has been studied. A comparison of the results with that of lead added samples indicates that ability of lead in enhancing the superconducting phase formation is unique. It is observed that none of the above additives replaces Bi3+ ions in the lattice structure.
Polymer Transition Temperature Barium Expense Bismuth
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C. C. Torardi, M. Subramaniam, J. C. Calabrese, J. Gopalkrishnan, E. M. C. McCarron, K. J. Morrissey, T. R. Askew, R. B. Flippen, U. Chowdhry and A. W. Sleight, Phys. Rev. B38 (1988) 225.CrossRefGoogle Scholar