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Observed (solid circles), calculated (solid line), and difference (solid line at the bottom) XRD patterns for (a) ( model), (b) ( model), and (c) ( model) samples at room temperature. Bragg reflections are indicated by ticks. The lower ticks are given for impurity phase. The insets show schematic representations of the corresponding structures.
[(a) and (b)] PFM images obtained for sample and demonstrating ferroelectric domains and electric-field-induced PFM contrast after poling with . [(c) and (d)] PFM images obtained for sample before and after poling inner area with . (e) PFM image obtained for sample after poling inner area with and showing no piezoresponse. (f) Local piezoresponse hysteresis loops for samples.
Field dependencies of the magnetization obtained for samples at room temperature.
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