Space group and chemical analysis of Y2BaCuO5•x by convergent beam electron diffraction and x-ray energy-dispersive spectroscopy

The results of analyses of chemistry and microstructure of one of the secondary phases commonly observed in samples of the new high-temperature superconductors are reported. The crystal structure has been examined by convergent beam electron diffraction and is confirmed to be orthorhombic, with spac...

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Bibliographic Details
Published in:Applied physics letters 1987-09, Vol.51 (13), p.1035-1037
Main Authors: MANSFIELD, J. F, CHEVACHAROENKUL, S, KINGON, A. I
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Inorganic compounds
Physics
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
Water, oxides, hydroxides, peroxides
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Summary:The results of analyses of chemistry and microstructure of one of the secondary phases commonly observed in samples of the new high-temperature superconductors are reported. The crystal structure has been examined by convergent beam electron diffraction and is confirmed to be orthorhombic, with space group Pbnm and lattice parameters a=0.71 nm, b=1.22 nm, and c=0.56 nm. The stoichiometry of the metal components was found by x-ray energy-dispersive spectroscopy to be Y1.0Ba0.5Cu0.5, which leads us to postulate that this phase is Y2BaCuO5−x.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.98770