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Monoclinic FeO at high pressures
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Innokenty Kantor
Published/Copyright:
September 25, 2009
Abstract
A high-pressure quasi-single crystal X-ray diffraction study of a synthetic iron oxide Fe0.95O sample was performed up to 80 GPa using the diamond anvil cell technique. At a pressure of about 75 GPa after laser annealing we observed a new high-pressure monoclinic modification of FeO with P21/m space group. The structure is closely related to that of cubic sodium chloride as a distortion of the lattice. The sequence of transitions cubic-trigonal-monoclinic for FeO follows group-subgroup relations.
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Received: 2007-November-05
Accepted: 2008-June-26
Published Online: 2009-9-25
Published in Print: 2008-7-1
© Oldenbourg Wissenschaftsverlag
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Keywords for this article
Iron oxide;
High-pressure;
Phase transitions;
X-ray diffraction
Articles in the same Issue
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