PECULIARITIES OF FERRO-ANTIFERROELECTRIC PHASE-TRANSITIONS - 4 - INTERMEDIATE STATES IN FERROELECTRIC AND ANTIFERROELECTRIC

Results of the study of phase transitions caused by the action of elec tric field are presented for systems where FE and AFE states are reali zed. For the objects which undergo AFE FE transition it is shown that the emergence of intermediate state of coexisting FE and AFE phase dom ains is possible within a certain interval of electric field intensity . The intermediate state in ferro and antiferroelectrics is found to e ssentially differ in nature from that in magnetics and superconductors . The properties of a such state in FE and AFE are revealed. The predi cted phenomena are shown to be observed in experiment for PZT based so lid solutions.