BROAD DISTRIBUTION OF CRYSTAL-FIELD ENVIRONMENTS FOR ND3+ IN CALCITE

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dc.contributor.author Withers S.H.
dc.contributor.author Peale R.E.
dc.contributor.author Schulte A.F.
dc.contributor.author Braunstein G.
dc.contributor.author Beck K.M.
dc.contributor.author Hess W.P.
dc.contributor.author Reeder R.J.
dc.date.accessioned 2022-02-21T00:48:18Z
dc.date.available 2022-02-21T00:48:18Z
dc.date.issued 2003
dc.identifier https://elibrary.ru/item.asp?id=14513838
dc.identifier.citation Physics and Chemistry of Minerals, 2003, 30, 7, 440-448
dc.identifier.issn 0342-1791
dc.identifier.uri https://repository.geologyscience.ru/handle/123456789/35600
dc.description.abstract Calcite micro-crystals were grown from solution with single crystal dimensions up to 3 mm and doped up to ~0.1% with Nd3+ ions. Phase purity was verified by powder x-ray diffraction. The concentration of Nd3+ was measured by energy-dispersive spectrometry and Rutherford backscattering spectrometry. Micro x-ray fluorescence mapping of the calcite grains indicates uniform Nd distribution in as-grown crystal grains. X-ray absorption fine structure indicates that Nd3+ is substituted for Ca2+ with local lattice distortion. Temperature dependent near-infrared spectroscopy of Nd3+ impurities in calcite reveals large inhomogeneous line widths. These results suggest a broad distribution of crystal-field environments for Nd3+ as a result of charge compensation and inhomogeneous lattice strain.
dc.subject Calcium carbonate
dc.subject Calcite
dc.subject Neodymium
dc.subject Carbonate minerals
dc.subject Nuclear waste
dc.title BROAD DISTRIBUTION OF CRYSTAL-FIELD ENVIRONMENTS FOR ND3+ IN CALCITE
dc.type Статья


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