STUDY OF DEFECTS IN ZR LACUNAR NASICON CRYSTALS

Authors
BROVETTO P MAXIA V SALIS M LUCCOBORLERA M MAZZA D
Citation
P. Brovetto et al., STUDY OF DEFECTS IN ZR LACUNAR NASICON CRYSTALS, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 20(6), 1998, pp. 799-805
Citations number
6
Categorie Soggetti
Physics
Journal title
Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics → ACNP
ISSN journal
03926737
Volume
20
Issue
6
Year of publication
1998
Pages
799 - 805
Database
ISI
SICI code
0392-6737(1998)20:6<799:SODIZL>2.0.ZU;2-Q
Abstract
Samples of Nasicon compounds NaxZr2 - ySi3 - zPzO12, with x - 4y + z = 4, were investigated by radioluminescence and thermoluminescence expe riments. It has been found that disorder in the Zr lacunar sublattice originates charged defects active as centres of electron-hole radiativ e recombinations in excited crystals. The analysis of radioluminescent spectra shows that the minimum displacements of Na+ ions exceed 5 Ang strom. This result yields information on the paths of Na+ ions in the ionic conduction of these materials.