Field induced O-MC phase transition and domain structure evolution in Pb(Mg1/3Nb2/3)O3-0.34PbTiO3 single crystals under radial poling
Source abstract
Abstract
Abstract Radial electric (E)-field induced periodic polarization rotation from orthorhombic (O) to MC-type monoclinic (MC) phase in Pb(Mg1/3Nb2/3)O3-0.34PbTiO3 (PMN-0.34 PT) single crystals has been studied by in situ polarized light microscope. The piezoelectric coefficient ( d 33 ∗ ) and dielectric permittivity ( e 33 T / e 0 ) were 1800 pm/V and 5100, respectively, for [100]-oriented MC samples, almost three times of those in [011]-oriented O phase crystals. The domain structure evolution from 1O to 4MC was confirmed based on the optical extinction rules and permissible domain configurations. Moreover, the phase transition sequences of [100]- and [011]-poled PMN-0.34 PT crystals were MC—Tetragonal (T)—Cubic (C) and O—T—C upon heating, respectively. Our findings suggest that the phase stability of this crystals is associated with the orientation of applied field and radial E-field can serve as a general strategy to get fundamental insights into large piezoelectric activity and anisotropic phase stability in ferroelectric single crystals.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Acoustic Wave Resonator Technologies · Photorefractive and Nonlinear Optics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
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