Calorimetric and dielectric studies of ferroelectric composites based on diisipropylammonium bromide and lead titanate

Abstract

Results of calorimetric and dielectric studies of ferroelectric composite (C6H16NBr)1-x/(PbTiO3)x (x = 0.1, 0.2, 0.3) are presented. It was shown that addition of lead titanate leads to a change of the sequence in structural phase transitions in diisipropylammonium bromide. In the temperature range 423–411 K, two phases of C6H16NBr (ferroelectric P21 and non-ferroelectric P212121) are coexist. It was found that their ratio depends on the lead titanate content.