Antiferroelectricity induced by electric field in NaNbO3-based lead-free ceramics
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چکیده
Electric fields are known to favor a ferroelectric phase with parallel electric dipoles over an antiferroelectric phase. We demonstrate in this Letter that electric fields can induce an antiferroelectric phase out of a ferroelectric phase in a NaNbO3-based lead-free polycrystalline ceramic. Such an unlikely ferroelectric-to-antiferroelectric phase transition occurs at fields with a reversed polarity and competes with the ferroelectric polarization reversal process. VC 2014 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4863850]
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تاریخ انتشار 2014