Transport in glassy fast-ion conductors. A stud of LiAlSiO4 glass

Alexander Pechenik, D. H. Whitmore, S. Susman, Mark A Ratner

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The mechanism of ionic motion in LiAlSiO4 glass is investigated using a combination of structural (vibrational spectroscopy, X-ray diffraction) and transport (ionic conductivity) methods. We find that the material is quite a good Li+ conductor (σ ≈ 10-3 μ-1 cm-1 at 500 °C), and that the vibrational density of states deduced from spectroscopic studies agrees very well with the continuous random network model. Moreover, the tendency towards ordering seen in many aluminosilicates and described by Loewenstein's rule is discussed in the context of our spectroscopic observations, and we find that the Loewenstein rule also holds approximately in this glassy material. The rigidly alternating potential seen by Li+ ions in crystalline LiAlSiO4 (β-eucryptite) is substantially altered by the disorder present in the glass. This disorder strongly reduces correlation effects on ionic motion in the glass, as opposed to the crystal, resulting in a smaller activation energy for conductivity in the glass.

Original languageEnglish
Pages (from-to)54-64
Number of pages11
JournalJournal of Non-Crystalline Solids
Volume101
Issue number1
DOIs
Publication statusPublished - 1988

Fingerprint

conductors
Ions
Glass
glass
ions
disorders
Vibrational spectroscopy
Aluminosilicates
Ionic conductivity
ion currents
tendencies
Activation energy
activation energy
Crystalline materials
X ray diffraction
conductivity
Crystals
diffraction
spectroscopy
crystals

ASJC Scopus subject areas

  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials

Cite this

Transport in glassy fast-ion conductors. A stud of LiAlSiO4 glass. / Pechenik, Alexander; Whitmore, D. H.; Susman, S.; Ratner, Mark A.

In: Journal of Non-Crystalline Solids, Vol. 101, No. 1, 1988, p. 54-64.

Research output: Contribution to journalArticle

Pechenik, Alexander ; Whitmore, D. H. ; Susman, S. ; Ratner, Mark A. / Transport in glassy fast-ion conductors. A stud of LiAlSiO4 glass. In: Journal of Non-Crystalline Solids. 1988 ; Vol. 101, No. 1. pp. 54-64.
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