Unique vibrational excitations in superionic conducting glass

Nakamura, Mitsutaka ; Arai, Masatoshi; Kartini, E.*; Taylor, J. W.*; Russina, M.*

Superionic glasses (AgI) $_{0.33}$ (Ag $_{2}$ S) $_{0.33}$ (AgPO $_{3}$ ) $_{0.34}$ and (AgI) $_{0.5}$ (AgPO $_{3}$ ) $_{0.5}$ have high ionic conductivity at room temperature ( $sigmasim10^{-2}$ 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 $_{3}$ ). For superionic glasses we find an excess intensity above =1.8 $AA$^{-1}$$ and peak profile at around 2.2 $AA$^{-1}$$ by investigating the -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.

Language	:	English
Journal	:	AIP Conference Proceedings 832
Volume	:
Number	:
Pages	:	p.504 - 507
Publication Year/Month	:	2006/05
Meeting title	:	3rd International Workshop on Complex Systems
Held date	:	2005/11
Location (city)	:	Sendai
Location (country)	:	Japan
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Paper URL	:	https://doi.org/10.1063/1.2204548
DOI for research data	:
Keywords	:	no keyword
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Registration No. : BB20050277
JAEA Abstracts No. : 34001008
Paper Submission No. : 1153

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