Crystal Growth and Substitutional Chemistry of Pb2Sr2MCu3O8

L. F. Schneemeyer, R. J. Cava, A. C.W.P. James, P. Marsh, T. Siegrist, J. V. Waszczak, J. J. Kraiewski, W. P. Peck, R. L. Opila, S. H. Glarum, J. H. Marshall, R. Hull, J. M. Bonar

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We report the crystal growth and ceramic preparation of Pb2Sr2MCu3O8 phases containing a variety of lanthanoids and lanthanoid/alkaline-earth metal solid solutions. These recently discovered high-temperature superconductors add to our understanding of the chemical and structural features key to superconductivity in cuprates. The growth of millimeter-sized crystals from PbO-rich fluxes is described. Ceramic samples of the Pb2Sr2MCu3O8 phase are formed under low oxygen partial pressures for the majority of the lanthanoids. Systematic structural changes are observed as a function of lanthanoid size. The substitution of alkaline-earth metals on the lanthanoid site and the substitution of barium for strontium to form Pb2Ba2YCu3O8 are also described.

Original languageEnglish
Pages (from-to)548-553
Number of pages6
JournalChemistry of Materials
Issue number5
StatePublished - 1 Sep 1989


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