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Luminescence and energy transfer in a highly symmetrical system: Eu2Ti2O7

descriptionPublicationkeyboard_double_arrow_right Article 01 May 1986 English Publisher:Elsevier BVJournal:Journal of Solid State Chemistry, volume 62, pages 317-327 (issn: 0022-4596,

Authors: G. Blasse; P.A.M. Berdowski;

doi: 10.1016/0022-4596(86)90246-x

Luminescence and energy transfer in a highly symmetrical system: Eu2Ti2O7

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Abstract

Abstract Luminescence and energy transfer properties of Gd 2 Ti 2 O 7 : Eu and Eu 2 Ti 2 O 7 are reported. Transfer between unperturbed (intrinsic) Eu 3+ ions and perturbed (extrinsic) Eu 3+ ions has been observed. At low temperatures the emission spectra of Eu 2 Ti 2 O 7 are dominated by trap emission, due to direct energy transfer from the intrinsic Eu 3+ ions to the extrinsic Eu 3+ ions. Above 10 K energy migration among the Eu 3+ ions to quenching centers occurs. The interaction between the Eu 3+ ions is probably exchange in character. The nature of the extrinsic Eu 3+ ions has been elucidated.

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Utrecht University
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