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- W4225536355 abstract "The nanoscopic characterization of ferroelectric thin films is crucial from their device application point of view. Standard characterization techniques are based on detecting the nanoscopic charge compensation current (switching current) caused by the polarization reversal in the ferroelectric. Owing to various surface and bulk limited mechanisms, leakage currents commonly appear during such measurements, which are frequently subtracted using the device I-V characteristic by employing positive-up-negative-down (PUND) measurement scheme. By performing nanoscopic switching current measurements on a commonly used ferroelectric, BiFeO3, we show that such characterization methods may be prone to large errors in the polarization estimation on ferro-resistive samples, due to current background subtraction issues. Especially, when ferro-resistive behavior is associated with the polarization reversal of the ferroelectric thin film, background current subtraction is not accurate due to the mismatch of the I-V characteristics for the two polarization states. We show instead that removing the background current by an asymmetric least squares subtraction method, though not perfect, gives a much better estimation of the ferroelectric properties of the sample under study." @default.
- W4225536355 created "2022-05-05" @default.
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- W4225536355 date "2022-03-11" @default.
- W4225536355 modified "2023-09-27" @default.
- W4225536355 title "Toward accurate polarization estimation in nanoscopic systems" @default.
- W4225536355 doi "https://doi.org/10.48550/arxiv.2203.06157" @default.
- W4225536355 hasPublicationYear "2022" @default.
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