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(a) X-ray diffraction results and (b) hysteresis loops of the (111)-preferred films.
Schematic diagrams of the pulse trains used to measure (a) nonswitching polarization and (b) switching polarization . Plots (c)–(f) show time -dependent polarization changes of films under various external voltages . Plots (g)–(j) show the corresponding distribution functions of the logarithmic characteristic switching time , .
External electric field -dependent changes of parameters in . (a) The center value and (b) the width of the distribution. (c) Variations of activation fields (solid blue squares) and half-width at half maximum of local field distributions (solid red circles) with a Zr concentration change.
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