Influence of defects on the ferroelectric properties (effect of X, gamma, fast neutron irradiation and doping; radiation-induced phase transitions; critical behavior); Charge storage in dielectric (electrets; piezopolymers; ferroelectric polymers); Dynamics of ferroelectric and ferroelastic domain structures; Superprotonic phase transitions in AHXO4, A3H(XO4)2, A4H2(XO4)3 crystals (A= Rb, Cs, NH4, X= S, Se; effect of local structure and its dynamics).
From 2000