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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<v<2.5 THz). The data are presented in terms of the conductivity and the electrical modulus formalisms. The width of the modulus loss peak as measured for the ceramic sample is broader than that determined for its precursor glass. This result is shown to be associated with the considerably smaller dc conductivity of this material.

electric properties, superconductors, semiconductors D 8000 -016Ionic Conductivity in Li2O-Al2O3-SiO2 Based Glasses and Glass Ceramics. -The complex conductivity of Li2O-Al2O3-SiO2 based glasses and glass ceramics is studied over a wide range of temp. and frequencies (200-700 K, 10 mHz-2.5 THz). The data are analyzed in various ways. -(LUNKENHEIMER, P.; GERHARD, G.; DREXLER, F.; BOEHMER, R.; LOIDL, A.; PANNHORST, W.