Mapping bias-induced phase stability and random fields in relaxor ferroelectrics

Rodriguez, B. J.; Jesse, S.; Bokov, A. A.; Ye, Z.-G.; Kalinin, S. V.
August 2009
Applied Physics Letters;8/31/2009, Vol. 95 Issue 9, p092904
Academic Journal
The spatial variability of polarization reversal behavior in the relaxor 0.9Pb(Mg1/3Nb2/3O3)–0.1PbTiO3 crystal, is revealed on the ∼100 nm scale using switching spectroscopy piezoresponse force microscopy. Quenched fields conjugate to polarization are found, which show mesoscopic (∼100–200 nm) spatial fluctuations around near-zero bias values. The mapping of the stability gap of the bias-induced phase and conjugate random fields is demonstrated. The origin of the observed nanoscale domains and the field-induced part of the polarization are discussed.


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