Crystal growth and substitutional chemistry of Pb sub 2 Sr sub 2 MCu sub 3 O sub 8.
01 January 1989
We report the crystal growth and ceramic preparation of Pb sub 2 Sr sub 2 MCu sub 3 O sub 8 phases containing a variety of lanthanoids and lanthanoid/alkaline earth 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 Pb sub 2 Sr sub 2 MCu sub 3 O sub 8 phase are formed under mildly reducing conditions for the majority of the lanthanoids.