Relation between high ionic conductivity and Boson peak in superionic glass

M. Arai, H. Iwase, M. Nakamura, T. Otomo, E. Kartini, K. Itoh, S. J. Levett, S. M. Bennington

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The inelastic neutron scattering measurements of superionic glass system (AgI)x(Ag2S)x(AgPO3)1-2x reveal that an excess intensity around 3 meV, the so-called boson peak, increases with the dopant salt concentration x. The composition dependence of boson peak intensity has a systematic relation with ionic dc conductivity. These correlated features are discussed from the viewpoint of free spaces involved with the expansion of network structure by salt doping. Cooperative dynamical properties concerned with free spaces contribute to the enhancement of hopping probability of Ag+ ions. Successive hopping is promoted in order to keep electric neutrality, where the hopping events of charged ion microscopically violates the electric neutrality. These processes should result in the high ionic conductivity of superionic glasses.

Original languageEnglish
Title of host publicationFLOW DYNAMICS
Subtitle of host publicationThe Second International Conference on Flow Dynamics
Pages299-302
Number of pages4
DOIs
Publication statusPublished - May 5 2006
Externally publishedYes
EventFLOW DYNAMICS: The Second International Conference on Flow Dynamics - Sendai, Japan
Duration: Nov 16 2005Nov 18 2005

Publication series

NameAIP Conference Proceedings
Volume832
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherFLOW DYNAMICS: The Second International Conference on Flow Dynamics
CountryJapan
CitySendai
Period11/16/0511/18/05

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Arai, M., Iwase, H., Nakamura, M., Otomo, T., Kartini, E., Itoh, K., Levett, S. J., & Bennington, S. M. (2006). Relation between high ionic conductivity and Boson peak in superionic glass. In FLOW DYNAMICS: The Second International Conference on Flow Dynamics (pp. 299-302). (AIP Conference Proceedings; Vol. 832). https://doi.org/10.1063/1.2204511