P. Lunkenheimer et al., IONIC-CONDUCTIVITY IN LI2O-AL2O3-SIO2 BASED GLASSES AND GLASS-CERAMICS, Zeitschrift fur Naturforschung. A, A journal of physical sciences, 50(12), 1995, pp. 1151-1155
The complex conductivity of lithium aluminosilicate based glasses and
glass-ceramics (Zerodur from Schott) has been investigated in a broad
range of temperatures (200 K < T < 700 K) and frequencies (10 mHz < nu
< 2.5 THz). The data are presented in terms of the conductivity and t
he electrical modulus formalisms. The width of the modulus loss peak a
s measured for the ceramic sample is broader than that determined for
its precursor glass. This result is shown to be associated with the co
nsiderably smaller de conductivity of this material.