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Iron spin transition in Earth's mantle.

Abstract:

High-pressure Mössbauer spectroscopy on several compositions across the (Mg,Fe)O magnesiowüstite solid solution confirms that ferrous iron (Fe(2+)) undergoes a high-spin to low-spin transition at pressures and for compositions relevant to the bulk of the Earth's mantle. High-resolution x-ray diffraction measurements document a volume change of 4-5% across the pressure-induced spin transition, which is thus expected to cause seismological anomalies in the lower mantle. The spin transition can ...

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Publication status:
Published

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Publisher copy:
10.1073/pnas.0508919102

Authors


Speziale, S More by this author
Pasternak, MP More by this author
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Journal:
Proceedings of the National Academy of Sciences of the United States of America
Volume:
102
Issue:
50
Pages:
17918-17922
Publication date:
2005-12-05
DOI:
EISSN:
1091-6490
ISSN:
0027-8424
URN:
uuid:044dc55d-ff70-4e4d-ba8e-a5aa221b8eb4
Source identifiers:
184761
Local pid:
pubs:184761
Language:
English
Keywords:

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