TITLE

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

AUTHOR(S)
Mansfield, John F.; Chevacharoenkul, Sopa; Kingon, Angus I.
PUB. DATE
September 1987
SOURCE
Applied Physics Letters;9/28/1987, Vol. 51 Issue 13, p1035
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
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.
ACCESSION #
9824311

 

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