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Ionic Motion and Structure of Ion ConductiveGlasses

Published online by Cambridge University Press:  15 February 2011

T. Akai ,
M. Yamashita ,
H. Yamanaka  and
H. Wakabayashi
T. Akai
Affiliation:
Optical Material Department, Osaka National Research Institute, AIST* 1–8–31, Midorigaoka, Ikeda, 563, Japan.
M. Yamashita
Affiliation:
Optical Material Department, Osaka National Research Institute, AIST* 1–8–31, Midorigaoka, Ikeda, 563, Japan.
H. Yamanaka
Affiliation:
Optical Material Department, Osaka National Research Institute, AIST* 1–8–31, Midorigaoka, Ikeda, 563, Japan.
H. Wakabayashi
Affiliation:
Optical Material Department, Osaka National Research Institute, AIST* 1–8–31, Midorigaoka, Ikeda, 563, Japan.
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Abstract

The dynamic structure of xLi2S-Ga2S3-6GeS2 (x=4 and 6)glasses has been investigated by 7Li nuclear magnetic resonance.In two samples similar values of spin-lattice relaxation time(T1) were obtained. The relaxation mechanism at 20MHz and 78MHzis therefore attributed to the local motion of lithium ions. In the glasscorresponding to x=6, which shows higher conductivity, the slow motion ofions showing an activation energy of 24.3kJ/Mol has been detected by thespin-lattice relaxation time in the rotating frame (T1p). Thisvalue is comparable to the activation energy determined by the conductivity.The existence of this mode is supported by the motional narrowing of theline width which is sensitive to the motion less than 10kHz.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 321: Symposium E – Crystallization and Related Phenomena in Amorphous Materials—Ceramics, Metals, Polymers, and Semiconductors , 1993 , 191
Copyright
Copyright © Materials Research Society 1994

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References

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