Abstract
The influence of axial pressure (0–1500 bars) on dielectric properties of PbTiO 3 single crystal was studied. It is found that material is strongly sensitive to external stress. This is connected with: (i) the shift of the cubic–tetragonal phase transition temperature, decrease of permittivity and diffuseness of its profile and reduction of thermal hysteresis. Values of the thermodynamic parameters of the phase transition were also determined.
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