@article{Ramesh1990251,
  keywords = {High temperature superconductors, Superconducting materials, Magnetic properties, Lattice parameters, Oxide superconductors, Microscopic Examination{\textendash}Transmission Electron Microscopy, Ceramic Materials{\textendash}Electric Conductivity, Lead Compounds{\textendash}Electric Conductivity, Lead Metallography{\textendash}Microstructures, Diamagnetic Properties, Lead Strontium Calcium Erbium Copper Oxides, Low Temperature Properties},
  author = {Ramamoorthy Ramesh and E Wang and L.H Greene and M.S Hegde and J.-M Tarascon},
  title = {Electron Microscopy of the Pb-Sr-Ca-Er-Cu-O Superconductor},
  abstract = {The structure and microstructure of a solid state processed Pb-Sr-Ca-Er-Cu-O superconductor have been investigated by transmission electron microscopy. In addition to the majority superconducting phase, at least two other impurity phases have been observed. The superconducting phase is a layered structure similar to the Bi2Sr2CaCu2Cycompound, with an extra Cu atom between the two PbO layers. Stacking defects inside the grain have been observed. A grain boundary amorphous phase has also been observed. The steps in the resistivity-temperature plot and the consequent absence of Tc, 0 above 8 K are attributed to either the presence of the Pb2Sr2Cu2Oyunit cell at the grain boundary and/or a local enrichment of oxygen at the grain boundaries. Superlattice spots in the [100] zone axis diffraction patterns from regions enriched in Ca and Er with respect to the nominal composition are interpreted as due to ordering of Sr and Ca/Er in the Sr sites. {\textcopyright} 1990, Materials Research Society. All rights reserved.},
  year = {1990},
  booktitle = {Journal of Materials Research},
  journal = {Journal of Materials Research},
  series = {Journal of Materials Research},
  volume = {5},
  number = {2},
  pages = {251-257},
  issn = {08842914},
  doi = {10.1557/JMR.1990.0251},
  note = {cited By 2},
  language = {eng},
}