In situ transmission electron microscopy study of the nanodomain growth in a Sc-doped lead magnesium niobate ceramic

Date
2006-07-10
Authors
Qu, W.
Zhao, X.
Tan, Xiaoli
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Abstract

Sc doping enhances the B-site 1:1 cation ordering in the Pb(Mg1/3Nb2/3)O3ceramic. At low doping levels, the electrical polar domains remain at the nanometer scale and the relaxor ferroelectric behavior persists. The electric field-induced relaxor to normal ferroelectric phase transition process was directly observed with an in situtransmission electron microscopy technique in a Sc-doped Pb(Mg1/3Nb2/3)O3 polycrystalline sample. It was found that the phase transition started at the grain boundary and took two steps to complete: the gradual coalescence of the polar nanodomains and the abrupt formation of the large wedge-shaped ferroelectric domains.

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The following article is from Applied Physics Letters 89 (2006): 022904 and may be found at http://dx.doi.org/10.1063/1.2219416.

Keywords
Ozone, Niobium, Ferroelectric phase transitions, Lead, Ceramics, Magnesium, Relaxor ferroelectrics, Transmission electron microscopy, Phase transitions, Polarization
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