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Ionics

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A comparative and correlation structure-Ac conductivity analysis of doped 1%Eu3+ and undoped ceramic of Li2BaP2O7

  • Mariem BeltaifEmail author
  • Marwa Krichen
  • Makram Megdiche
  • Mohamed Dammak
Original Paper
  • 13 Downloads

Abstract

In this work, Li2BaP2O7 doped 1% Eu3+ was prepared by a solid-state reaction method and characterized by X-ray diffraction technique, IR, and impedance spectroscopy. Rietveld refinement of the X-ray diffraction pattern suggests the formation of the single-phase desired compound with monoclinic structure at room temperature. Electrical properties were studied using complex impedance spectroscopy in the frequency range of 200 Hz–5 MHz and temperature range of 598–724 K. The temperature dependence of the bulk and grain boundaries’ conductivity was found to obey the Arrhenius law with activation energies Eg = 0.79 eV and Egb = 1.85 eV respectively. Temperature dependence of the power law exponent s strongly suggests that tunneling of large polaron is the dominant transport process. The obtained results are compared with the undoped Li2BaP2O7 sample and correlated with structural analysis. Doping pyrophosphate compound by Eu3+ presents better conductivity and electrical properties.

Keywords

Eu3+ Conduction mechanism AC conductivity Impedance spectroscopy 

Notes

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Mariem Beltaif
    • 1
    Email author
  • Marwa Krichen
    • 2
  • Makram Megdiche
    • 2
  • Mohamed Dammak
    • 1
  1. 1.Laboratoire de Physique Appliquée, Groupe de Physique des matériaux luminescents, Faculté des Sciences de Sfax, Département de Physique, BP 1171Université de SfaxSfaxTunisie
  2. 2.Laboratory of Spectroscopic Characterization and Optical Materials, Faculty of SciencesUniversity of SfaxSfaxTunisia

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