MECHANICAL RELAXATION BY MOBILE IONS (Cu+ AND Ag+) IN FAST ION CONDUCTING GLASSES
نویسندگان
چکیده
The d i s s i p a t i o n o f mechanical energy i n g l a s s e s of t h e " f a s t ion conductor" type (AgI-AgP03, AgI-Ap,B02 and AgC1-CsI) has been s t u d i e d us ing a Rheovibron mechanical ana lyze r i n t h e temperature range -190 t o 200°C. I n most cases a s i n g l e l o s s peak a t low temperature is found f o r fixed-frequency scans . The peak temperature almost co inc ides wi th t h a t f o r e l e c t r i c a l conduc t iv i ty rel a x a t i o n b u t is much broader . The l o s s magnitude does not c o r r e l a t e wi th peak temperature bu t depends on g l a s s cons t i tu t ion . Idhere l o s s is smal l , t h e re laxat i o n time fol lows Arrhenius Law wi th r0 = l/2irf0,where f, i s found from f a r IR s p e c t r a . For l a r g e l o s s g la s ses , important non-Arrhenius behavior is found.
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