Electron microscopy of a Gd-Ba-Cu-O superconductor

R. Ramesh, G. Thomas, R. L. Meng, P. H. Hor, C. W. Chu

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1 Citation (Scopus)


An electron microscopy study has been carried out to characterize the microstructure of a sintered Gd-Ba-Cu-O superconductor alloy. The GdBa2Cu3O7-x phase in the oxygen annealed sample is orthorhombic while in the vacuum annealed sample it is tetragonal. It is shown that the details of the fine structure in the [001] zone axis convergent beam patterns can be used to distinguish between the orthorhombic form and the tetragonal form. In addition to this matrix phase, an amorphous phase is frequently observed at the triple grain junctions. Gd-rich inclusions have been observed inside the matrix phase.

Original languageEnglish
Pages (from-to)515-520
Number of pages6
JournalJournal of Materials Research
Issue number3
Publication statusPublished - 1989 Jun

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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