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Crystal-chemistry aspects and electric-field-gradient (EFG) dispersion in Ca-gallogermanate-type structures studied by Mössbauer spectroscopy

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Abstract:

The crystal field disorder in some trigonal germanates of the type X3-yLnyFe2+yGe4-yO14 (X = Ba, Sr; Ln = La, Nd; y = 0, 1) is studied by 57Fe Mössbauer effect. The dispersion of the electric field gradient (EFG) at the octahedral sites of these compounds is investigated. A correlation of the experimental and calculated EFG data with some crystal-chemistry aspects is presented.

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Authors and Affiliations

  1. National Institute for Materials Physics, P.O. Box Mg.-07, 76900 Bucharest, Romania, , , , , , RO

    S. Constantinescu & D. Tarina

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  1. S. Constantinescu
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  2. D. Tarina
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Received 3 February 1999

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Constantinescu, S., Tarina, D. Crystal-chemistry aspects and electric-field-gradient (EFG) dispersion in Ca-gallogermanate-type structures studied by Mössbauer spectroscopy. Eur. Phys. J. B 13, 75–81 (2000). https://doi.org/10.1007/s100510050011

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  • DOI: https://doi.org/10.1007/s100510050011

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