Logarithmic Anomaly in the Thermal Expansion Coefficients of Ferroelectric TGS

Abstract

Temperature dependence of the thermal expansion coefficients along the a * -, b -, and c -axes of TGS were investigated. A logarithmic anomaly was observed for all cases in a range T - T c <10∼20 K above T c . The result is consistent with our previous observation of a logarithmic anomaly in the specific heat.