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- W2017256819 abstract "57Co-doped CaO single crystals have been studied by the Mössbauer technique. Three charge states Fe1+, Fe2+ and Fe3+ are observed. Below 6.5 K a Fe2+ quadrupole doublet appears. Using Ham strain model we discuss and compare our results with Fe2+ -doped KMgF3 and MgO which indicate that the dynamical Jahn-Teller effect is very important in CaO: Fe2+. Des monocristaux d'oxyde de calcium dopés au Cobalt 57 ont été étudiés par la spectrométrie Mössbauer. Nous avons observés la présence de trois états de charge du fer : Fe1+, Fe2+ et Fe3+. Suivant le modéle de champ de constraintes proposé par Ham, nous discutons et comparons nos résultats avec ceux obtenus pour le Fe2+ en impureté dans KMgF3 et MgO. La conclusion essentielle de notre étude est la présence d'un effet Jahn-Teller dynamique trés important pour le Fe2+ en impureté dans l'oxyde de calcium." @default.
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- W2017256819 date "1973-02-01" @default.
- W2017256819 modified "2023-09-23" @default.
- W2017256819 title "Mössbauer study of 57Fe in doped CaO crystals" @default.
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- W2017256819 doi "https://doi.org/10.1016/0038-1098(73)90502-4" @default.
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