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  • 1
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    Wuestite (Fe/1-x/O) - A review of its defect structure and physical properties (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Such complexities of the Wustite structure as nonstoichiometry, ferric iron variable site distribution, long and short range ordering, and exsolution, yield complex physical properties. Magnesiowustite, a phase which has been suggested to occur in the earth's lower mantle, is also expected to exhibit many of these complexities. Geophysical models including the properties of (Mg, Fe)O should accordingly take into account the uncertainties associated with the synthesis and measurement of iron-rich oxides. Given the variability of the Fe(1-x)O structure, it is important that future researchers define the structural state and extent of exsolution of their samples.
    Keywords: GEOPHYSICS
    Type: Reviews of Geophysics and Space Physics (ISSN 0034-6853); 22; 37-46
    Format: text
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  • 2
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    Compression, nonstoichiometry and bulk viscosity of wuestite (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: New and existing data on the elasticity of wuestite which indicate virtually no correlation between the bulk modulus and stoichiometry are summarized. There appears, however, to be a systematic difference between static and dynamic measurements. This behavior suggests the presence of a frequency dependence to the bulk modulus that can be formally ascribed to a finite bulk viscosity of Fe(1-x)O. Such an effect has not previously been described in oxide or silicate minerals, and it presumably is caused by pressure-induced changes in defect ordering and subsequent relaxation within the incommensurate structure of wuestite.
    Keywords: GEOPHYSICS
    Type: Nature (ISSN 0028-0836); 304; Aug. 18
    Format: text
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