The (1 - y) ((1 - x)Pb(Mg1/3Nb2/3)O₃⁻xPbTiO₃)⁻yPbSnO₃ solid solution (PMN⁻PT⁻PS) was obtained and investigated in the present paper. For the analysis of the influence of the PbSnO₃ component on the electrophysical parameters, the compositions from the rhombohedral phase, tetragonal phase, and a mixture of these phases were selected. The six compositions of the PMN⁻PT have been obtained using sol⁻gel methods (for values of x equal to 0.25, 0.28, 0.31, 0.34, 0.37, and 0.40). The ceramic samples of the 0.9(PMN⁻PT)⁻0.1(PS) solid solution have been obtained using the conventional ceramic route. X-ray diffraction (XRD), energy dispersive spectrometry (EDS), and microstructure measurements were performed, as well as tests regarding the dielectric, ferroelectric, piezoelectric properties and electric conductivity of the PMN⁻PT⁻PS ceramic samples versus temperature. Results of the measurements show that the obtained PMN⁻PT⁻PS materials have good electrophysical properties and are well suited for use in micromechatronic and microelectronic applications.
Keywords: PMN–PT; ferroelectric materials; hysteresis loop; relaxor materials; sol–gel.