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Jahn-Teller configurations in natural spinels

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Abstract

The local configurations and related hyperfine interactions of the tetrahedrally coordinated Fe2+ in two natural spinels were investigated. A special fitting procedure of the Mössbauer spectra is proposed in order to cover the involved mechanisms over the whole temperature range. The behavior of the quadrupole splitting vs temperature was successfully explained in terms of the split of the electronic 3d ground state doublet under a non-cooperative Jahn-Teller effect also providing estimates of the splitting energy for each configuration.

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Authors and Affiliations

  1. National Institute for Physics of Materials, P.O. Box MG 7, 76900, Bucharest, Romania, , , , , , RO

    V. Kuncser, P. Palade & G. Filoti

  2. Dipartimento di Chimica Inorganica, Metallorganica e Analitica, Università di Padova, Via Loredan 4, I-35131 Padova, Italy Fax: +049 8275161, , , , , , IT

    U. Russo & R. Graziani

  3. Dipartimento di Mineralogia e Petrologia, Università di Padova, Corso Garibaldi 37, I-35122 Padova, Italy, , , , , , IT

    A. Della Giusta

  4. Department of Optics-Spectroscopy-Plasma-Lasers, Faculty of Physics, University of Bucharest, Romania, , , , , , RO

    M. Bulinski

Authors
  1. V. Kuncser
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  2. U. Russo
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  3. R. Graziani
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  4. A. Della Giusta
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  5. P. Palade
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  6. M. Bulinski
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  7. G. Filoti
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Additional information

Received: 5 January 1999 / Revised, accepted: 21 July 1999

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Kuncser, V., Russo, U., Graziani, R. et al. Jahn-Teller configurations in natural spinels. Phys Chem Min 27, 95–102 (1999). https://doi.org/10.1007/s002690050245

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  • DOI: https://doi.org/10.1007/s002690050245

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