FIELD-COOLED AND ZERO-FIELD-COOLED DIELECTRIC SUSCEPTIBILITY IN DEUTERON GLASSES

The temperature dependence of the field-cooled and zero-field-cooled static dielectric susceptibilities of the deuteron glass Rb0.4(ND4)0.6D2PO4 has been determined. Whereas above the freezing temperature T(f) the two susceptibilities are equal, a splitting of the two branches as well as a remanent polarization is observed below T(f). The fact that this splitting takes place demonstrates the occurrence of a freezing transition on crossing the Almeida-Thouless-like line.