Iron spin transition in Earth's mantle.
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 di...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2005
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| _version_ | 1826257237571534848 |
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| author | Speziale, S Milner, A Lee, V Clark, S Pasternak, M Jeanloz, R |
| author_facet | Speziale, S Milner, A Lee, V Clark, S Pasternak, M Jeanloz, R |
| author_sort | Speziale, S |
| collection | OXFORD |
| description | 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 lead to dissociation of Fe-bearing phases such as magnesiowüstite, and it reveals an unexpected richness in mineral properties and phase equilibria for the Earth's deep interior. |
| first_indexed | 2024-03-06T18:14:58Z |
| format | Journal article |
| id | oxford-uuid:044dc55d-ff70-4e4d-ba8e-a5aa221b8eb4 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:14:58Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | oxford-uuid:044dc55d-ff70-4e4d-ba8e-a5aa221b8eb42022-03-26T08:51:01ZIron spin transition in Earth's mantle.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:044dc55d-ff70-4e4d-ba8e-a5aa221b8eb4EnglishSymplectic Elements at Oxford2005Speziale, SMilner, ALee, VClark, SPasternak, MJeanloz, RHigh-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 lead to dissociation of Fe-bearing phases such as magnesiowüstite, and it reveals an unexpected richness in mineral properties and phase equilibria for the Earth's deep interior. |
| spellingShingle | Speziale, S Milner, A Lee, V Clark, S Pasternak, M Jeanloz, R Iron spin transition in Earth's mantle. |
| title | Iron spin transition in Earth's mantle. |
| title_full | Iron spin transition in Earth's mantle. |
| title_fullStr | Iron spin transition in Earth's mantle. |
| title_full_unstemmed | Iron spin transition in Earth's mantle. |
| title_short | Iron spin transition in Earth's mantle. |
| title_sort | iron spin transition in earth s mantle |
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