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Temperature dependence of the real part of the complex permittivity for PMN–13PT ceramics after poling at and subsequent zero-field heating.
Real part of complex permittivity at 21 Hz as a function of the applied dc bias field at a number of different temperatures.
Temperature characteristics of the inducing threshold field and relative reduction in the real part of permittivity . Relative reduction in permittivity is calculated with fields of 0 and 4 kV/cm.
Remanent polarization of PMN–13PT presented as a function of electric field during a two-way polarizing field cycle at temperature. The inset shows a detailed view of the remanent polarization behavior around the threshold field. Arrows indicate the direction of the electric field cycle.
Hysteresis loops with a maximum polarizing electric field of (a) 1 kV/cm, (b) 1.5 kV/cm, (c) 2 kV/cm, and (d) 4 kV/cm during a two-way polarizing field cycle at temperature. The black curve is measured on the ascending and the gray curve on the descending stage of the electric field cycle.
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