Zhang J. Effect of defects on the elastic properties of Wustite.
PHYSICAL REVIEW LETTERS 2000;
84:507-510. [PMID:
11015950 DOI:
10.1103/physrevlett.84.507]
[Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/1999] [Indexed: 05/23/2023]
Abstract
Wustite (FexO) has been studied under static high pressure in the composition range x = 0.95-0.99. Fe0.99O is substantially less compressible than FexO with x<0.98. Such observations provide the only direct evidence of a significant effect of defect concentration on the elastic properties and support the results of crystal-field modeling for ideal stoichiometric wustite. The bulk moduli of FexO show a discontinuous variation at compositions that are within the predicted range for the defect clusters to form, a behavior that may be caused by an order-disorder transition of the defect structure.
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