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The nature of the pressure-induced metallization of FeO and its implications to the core-mantle boundary

Geophysical Research Letters

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Abstract

The pressure and temperature-induced metallization of FeO discovered by Knittle et al (1986) is here argued to result from a Mott transition associated with increased Fe(3d)-Fe(3d) orbital overlap at high pressures. Consequently, it is here argued that a lower mantle containing only these phases should be electrically insulating. Finally, the formation of itinerant d-electrons in FeO may be a necessary, if not sufficient, condition for the apparent alloying of FeO with Fe. Such alloying may allow oxygen to be incorporated into the outer core. -from Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The nature of the pressure-induced metallization of FeO and its implications to the core-mantle boundary
Series title:
Geophysical Research Letters
Volume
16
Issue:
6
Year Published:
1989
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geophysical Research Letters
First page:
515
Last page:
518
Number of Pages:
4