Application of microcalorimetric technique for studying the change of specific heat after charge in dielectrics

Summary form only given, as follows. Insulators, polymers and ceramic oxides have been charged under electron irradiation. Then the specific heat C_p has been measured in a microcalorimeter at room temperature. In addition to the lattice contribution C_p ^L we have to consider two extra terms due to the charge δC_P^charge and to the polarization δC _P^pol. Results show that the behavior of C_p (t) as a function of the time depends on δC_P^charge (t) and δC_P^pol (t). The variation of the specific heat as a function of the charge has been also investigated in this work