Fe L 2,3 linear and circular magnetic dichroism of Fe3O4
Identifieur interne : 002B65 ( Main/Merge ); précédent : 002B64; suivant : 002B66Fe L 2,3 linear and circular magnetic dichroism of Fe3O4
Auteurs : P. Kuiper [Suède] ; B. G Searle [Nouvelle-Zélande] ; L.-C Duda [Suède] ; R. M Wolf [Pays-Bas] ; P. J Van Der Zaag [Pays-Bas]Source :
- Journal of Electron Spectroscopy and Related Phenomena [ 0368-2048 ] ; 1997.
English descriptors
- KwdEn :
- Absorption spectra, Additional information, Atomic calculation, Beam line, Chemical shift, Circular dichroism, Dichroism, Dominant peak, Electron spectroscopy, Experimental data, Experimental results, Ferrite, Ground state, Iron atoms, Kuiper, Linear dichroism, Lower energy, Negative peaks, Normal incidence, Octahedral, Octahedral site, Octahedral sites, Optical spectroscopy, Other ferrites, Phys, Small changes, Spectrum, Tetrahedral, Tetrahedral site, Tetrahedral sites, Tetrahedral symmetry, Theoretical spectra, Transition metal.
- Teeft :
- Absorption spectra, Additional information, Atomic calculation, Beam line, Chemical shift, Circular dichroism, Dichroism, Dominant peak, Electron spectroscopy, Experimental data, Experimental results, Ferrite, Ground state, Iron atoms, Kuiper, Linear dichroism, Lower energy, Negative peaks, Normal incidence, Octahedral, Octahedral site, Octahedral sites, Optical spectroscopy, Other ferrites, Phys, Small changes, Spectrum, Tetrahedral, Tetrahedral site, Tetrahedral sites, Tetrahedral symmetry, Theoretical spectra, Transition metal.
Abstract
Abstract: Measurements of circular and linear magnetic dichroism at the Fe 2p edges of Fe3O4 are presented. The dichroism results from the ferrimagnetic ordering of Fe d5 and d6 ions in octahedral and tetrahedral sites. Atomic calculations taking into account the different crystal fields have been fitted to all L-edge spectra of this compound. A chemical shift of 1.5 eV between the dominant L3 peak of the octahedral Fe2+ and Fe3+ ions gives the best fit of linear and circular dichroism. We investigate whether these parameters can be transferred to predict the Fe 2p dichroism in other ferrites.
Url:
DOI: 10.1016/S0368-2048(97)00053-4
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absorption spectra</term>
<term>Additional information</term>
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<term>Beam line</term>
<term>Chemical shift</term>
<term>Circular dichroism</term>
<term>Dichroism</term>
<term>Dominant peak</term>
<term>Electron spectroscopy</term>
<term>Experimental data</term>
<term>Experimental results</term>
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<term>Ground state</term>
<term>Iron atoms</term>
<term>Kuiper</term>
<term>Linear dichroism</term>
<term>Lower energy</term>
<term>Negative peaks</term>
<term>Normal incidence</term>
<term>Octahedral</term>
<term>Octahedral site</term>
<term>Octahedral sites</term>
<term>Optical spectroscopy</term>
<term>Other ferrites</term>
<term>Phys</term>
<term>Small changes</term>
<term>Spectrum</term>
<term>Tetrahedral</term>
<term>Tetrahedral site</term>
<term>Tetrahedral sites</term>
<term>Tetrahedral symmetry</term>
<term>Theoretical spectra</term>
<term>Transition metal</term>
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<term>Additional information</term>
<term>Atomic calculation</term>
<term>Beam line</term>
<term>Chemical shift</term>
<term>Circular dichroism</term>
<term>Dichroism</term>
<term>Dominant peak</term>
<term>Electron spectroscopy</term>
<term>Experimental data</term>
<term>Experimental results</term>
<term>Ferrite</term>
<term>Ground state</term>
<term>Iron atoms</term>
<term>Kuiper</term>
<term>Linear dichroism</term>
<term>Lower energy</term>
<term>Negative peaks</term>
<term>Normal incidence</term>
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<term>Octahedral site</term>
<term>Octahedral sites</term>
<term>Optical spectroscopy</term>
<term>Other ferrites</term>
<term>Phys</term>
<term>Small changes</term>
<term>Spectrum</term>
<term>Tetrahedral</term>
<term>Tetrahedral site</term>
<term>Tetrahedral sites</term>
<term>Tetrahedral symmetry</term>
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<front><div type="abstract" xml:lang="en">Abstract: Measurements of circular and linear magnetic dichroism at the Fe 2p edges of Fe3O4 are presented. The dichroism results from the ferrimagnetic ordering of Fe d5 and d6 ions in octahedral and tetrahedral sites. Atomic calculations taking into account the different crystal fields have been fitted to all L-edge spectra of this compound. A chemical shift of 1.5 eV between the dominant L3 peak of the octahedral Fe2+ and Fe3+ ions gives the best fit of linear and circular dichroism. We investigate whether these parameters can be transferred to predict the Fe 2p dichroism in other ferrites.</div>
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