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(a-d) Phase images of continuously writing and erasing information on the same region of the terpolymer film under bias voltages of ±2 V. The scale is 1.6 μm × 1.6 μm.
(a-d) Coordinate (y-axial) dependence of PFM response profile of the terpolymer film during writing and erasing.
Piezoresponse results of P(VDF-TrFE-CFE) terpolymer and P(VDF-TrFE) copolymer ultra-thin films, (a) phase loop; (b) amplitude curve.
Scheme of the ferroelectric domains of P(VDF-TrFE) copolymer and P(VDF-TrFE-CFE) terpolymer.
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