| Reference Type | Journal (article/letter/editorial) |
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| Title | A single crystal, linearly polarized Fe 2p X-ray absorption study of gillespite |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Schofield, P. F. | Author |
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| van der Laan, G. | Author |
| Henderson, C. M. B. | Author |
| Cressey, G. | Author |
| Year | 1998 (February) | Volume | 62 |
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| Issue | 1 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_62/62-1-65.pdf+ |
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| DOI | doi:10.1180/002646198547477Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 248 | Long-form Identifier | mindat:1:5:248:2 |
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| GUID | 0 |
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| Full Reference | Schofield, P. F., van der Laan, G., Henderson, C. M. B., Cressey, G. (1998) A single crystal, linearly polarized Fe 2p X-ray absorption study of gillespite. Mineralogical Magazine, 62 (1) 65-75 doi:10.1180/002646198547477 |
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| Plain Text | Schofield, P. F., van der Laan, G., Henderson, C. M. B., Cressey, G. (1998) A single crystal, linearly polarized Fe 2p X-ray absorption study of gillespite. Mineralogical Magazine, 62 (1) 65-75 doi:10.1180/002646198547477 |
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| In | (1998, February) Mineralogical Magazine Vol. 62 (1) Mineralogical Society |
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| Abstract/Notes | AbstractThe Fe 2p X-ray absorption spectra of single crystal gillespite, BaFeSi4O10, show a strong linear dichroism, i.e. a large difference in the absorption when measured with the polarization of the X-rays either parallel or perpendicular to the plane of the FeO4 group. The isotropic spectrum, obtained from measurement at the ‘magic angle’, and the polarization dependent spectra have been compared to atomic multiplet calculations and show an excellent agreement with theory. Analysis of the branching ratio, the linear dichroism, and the detailed peak structure confirms that the 5A1 level is the ground state at room temperature and pressure. The 5B2 level is sufficiently low in energy that a distortion of the electronic charge density, induced by increased pressure, may result in a 5B2 ground state. |
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