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X-ray and neutron powder diffraction studies of NiFeGaO4 and ZnFeGaO4

Published online by Cambridge University Press:  10 January 2013

R. M. A. Maayouf
Affiliation:
Reactor and Neutron Physics Department, NRC, Atomic Energy Authority, Cairo, Egypt
H.-G. Brokmeier
Affiliation:
Department of Physical Metallurgy, TU Clausthal and GKSS-Research Center, Geesthacht GmbH, Germany
M. K. Fayek
Affiliation:
Reactor and Neutron Physics Department, NRC, Atomic Energy Authority, Cairo, Egypt
S. WÖhlert
Affiliation:
GKSS-Research Center, Geesthacht GmbH, Germany

Abstract

The title compounds crystallize in the cubic space group Fd3m, Z = 8, with cell parameters of 8.2958(37) Å for NiFeGaO4 and 8.3921(24) Å for ZnFeGaO4. By comparison of experimental and calculated patterns with various site distribution models, ZnFeGaO4 has been determined to have the normal spinel structure and NiFeGaO4 a dominantly inverse spinel structure.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1993

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