TY - JOUR
T1 - Convergent-Beam Electron Diffraction Symmetry from a Disordered Structure (Ce, Ta) Ta6019
AU - Johnson, A. W. S.
AU - Gatehouse, B. M.
PY - 1980/3
Y1 - 1980/3
N2 - The space group of (Ce,Ta)Ta6019 is shown by convergent-beam diffraction to be P6c2 and not P63/mcm as previously reported by X-ray diffraction. The X-ray structure, however, is essentially correct, the major change being the ordering of the Ce and Ta atoms in the special positions 1/3, 2/3 and 2/3, 1/3 in strings parallel to the c axis with Ce at 1/3, 2/3 and Ta at 2/3, 1/3. Occasional interchanging of these strings would explain the space group observed in the X-ray determination.
AB - The space group of (Ce,Ta)Ta6019 is shown by convergent-beam diffraction to be P6c2 and not P63/mcm as previously reported by X-ray diffraction. The X-ray structure, however, is essentially correct, the major change being the ordering of the Ce and Ta atoms in the special positions 1/3, 2/3 and 2/3, 1/3 in strings parallel to the c axis with Ce at 1/3, 2/3 and Ta at 2/3, 1/3. Occasional interchanging of these strings would explain the space group observed in the X-ray determination.
U2 - 10.1107/S0567740880003755
DO - 10.1107/S0567740880003755
M3 - Article
SN - 2052-5206
VL - B36
SP - 523
EP - 526
JO - Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials
JF - Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials
ER -