TY - JOUR AU - Ramamoorthy Ramesh AU - G Thomas AU - S.M Green AU - Y Mei AU - C Jiang AU - H.L Luo AB - The microstructure of samples with and without Pb addition has been characterized by transmission electron microscopy. An amorphous Pb-rich grain boundary phase has been found in Pb-doped samples. It is suggested that a Pb-rich liquid phase assists sintering and homogenization of the composition of the superconducting phase to attain the higher zero Tc. In both samples, Ca replacement by Bi has been found. The implications of such a replacement are briefly discussed. BT - Applied Physics Letters DO - 10.1063/1.100476 LA - eng M1 - 18 N1 - cited By 34 N2 - The microstructure of samples with and without Pb addition has been characterized by transmission electron microscopy. An amorphous Pb-rich grain boundary phase has been found in Pb-doped samples. It is suggested that a Pb-rich liquid phase assists sintering and homogenization of the composition of the superconducting phase to attain the higher zero Tc. In both samples, Ca replacement by Bi has been found. The implications of such a replacement are briefly discussed. PY - 1988 SP - 1759 EP - 1761 T2 - Applied Physics Letters TI - Microstructure of Pb-modified Bi-Ca-Sr-Cu-O superconductor VL - 53 SN - 00036951 ER -