Browsing by Author "Lu, X."

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Role of measurement voltage on hysteresis loop shape in Piezoresponse Force Microscopy
(2012-11-05)
Strelcov, E.
;
Kim, Y.
;
Yang, J. C.
;
Chu, Y. H.
;
Yu, P.
The dependence of field-on and field-off hysteresis loop shape in Piezoresponse Force Microscopy (PFM) on driving voltage, V-ac, is explored. A nontrivial dependence of hysteresis loop parameters on measurement conditions is observed. The strategies to distinguish between paraelectric and ferroelectric states with small coercive bias and separate reversible hysteretic and non-hysteretic behaviors are suggested. Generally, measurement of loop evolution with V-ac is a necessary step to establish the veracity of PFM hysteresis measurements. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4764939]