Calorimetric studies of ferroelectrics in the pores of the metal matrix

Phase transitions in bulk ferroelectrics and ferroelectrics in the pores of the metal matrix (2-20 microns) were studied with the method of differential scanning calorimetry. It is shown that a shift of phase transitions and extension of the existence of the ferroelectric phase to 34 °C are observed in KNO 3 in the matrix. The phase transition temperature lowers by 2 °C for NaNO 2. The transition temperature change in TGS in a metal matrix was not observed. The results are discussed within the framework of the Landau-Ginsburg theory.