Unique Vibrational Excitations in Superionic Conducting Glass

Superionic glasses (AgI)0.33(Ag2S)0.33(AgPO3)0.34 and (AgI)0.5(AgPO3)0.5 have high ionic conductivity at room temperature ( ~ 10-2 S/cm). The inelastic neutron scattering measurements show that the superionic glass has larger intensity in low-energy region compared with undoped insulator glass (AgPO...

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Bibliographic Details
Main Authors: Nakamura, M, Arai, M, Kartini, E, Taylor, J W, Russina, M
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:Superionic glasses (AgI)0.33(Ag2S)0.33(AgPO3)0.34 and (AgI)0.5(AgPO3)0.5 have high ionic conductivity at room temperature ( ~ 10-2 S/cm). The inelastic neutron scattering measurements show that the superionic glass has larger intensity in low-energy region compared with undoped insulator glass (AgPO3). For superionic glasses we find an excess intensity above Q = 1.8 A-1 and peak profile at around 2.2 A-1 by investigating the Q-dependent features in low-energy region. These phenomena should be universal features of silver-salt superionic glass. We suppose that Ag-Ag dynamical correlation should promote the successive hopping process, and result in high ionic conductivity.
ISSN:0094-243X
DOI:10.1063/1.2204548