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Some physical properties of fluorine oxide glasses belonging to the NaF-Li2O-MoO3-P2O5 system

L. BIH1,* , S. MOHDACHI1, A. NADIRI1, M. MANSOURI2, M. AMALHAY3, O. MYKAJLO4, D. KAYNTS4

Affiliation

  1. UFR – PCMI – Céramiques et Verres, Faculté des Sciences et Techniques Errachidia, B.P 509, Boutalamine, Errachidia, Morocco
  2. FST Guéliz-Marrakech, Département de Chimie, Morocco
  3. Centres d’Etudes et de Recherches des Phosphates minéraux, CERPHOS, Morocco
  4. Institute for Solid State Physics and Chemistry of Uzhgorod National University, Uzhgorod, Ukraine

Abstract

The NaF – containing glasses of the 0.5[x(2NaF)-(1-x)Li2O]-0.5[0.4(MoO3)2-0.6P2O5] system, with x varying between 0 and 1, were synthesized. The glass samples have been characterised using powder X-ray diffraction (XRD), thermal analysis, density and impedance spectroscopy. It may be noted that the dc conductivity goes through a minimum for x = 0.5 corresponding to a maximum in the activation energy. This confirms that we have observed the mixed alkali effect (MAE) in the dc conductivity. We have observed lower dimensionality of the conduction pathways in mixed alkali glasses compared to that in the single alkali glasses.

Keywords

Ionic conductivity, Glass transition temperature, Fluorine oxide glasses, Molybdenum, Phosphate.

Citation

L. BIH, S. MOHDACHI, A. NADIRI, M. MANSOURI, M. AMALHAY, O. MYKAJLO, D. KAYNTS, Some physical properties of fluorine oxide glasses belonging to the NaF-Li2O-MoO3-P2O5 system, Optoelectronics and Advanced Materials - Rapid Communications, 2, 5, May 2008, pp.253-257 (2008).

Submitted at: March 21, 2008

Accepted at: May 8, 2008