Design of ‘3-3-3’ type piezoelectric composites & Simulation on local electric field distribution, domain structure and ferroelectric property in composites with different connectivity (IMAGE)
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(a) Polarization-electric field loop (P-E loop) of ‘0-3’, ‘3-3’ ‘3-3-3’ and CNT@‘3-3-3’ composites with composite schematic diagrams in the insets. (b) Phase-field simulation on local electric field distribution in polymer composites (inset images) with different structures at the same PZT volume fraction, and the simulated average electric fields in PZT skeleton (column chart). The applied electric field is set at 100 kV cm-1. The color bar represents the value of local electric field. (c) Phase-field simulation on polarization and domain structure of the PZT skeleton in ‘3-3’ and PZT skeleton with terpolymer layer in ‘3-3-3’ composites. The paraelectric elastomer matrix has minor contribution to the dielectric and polarization properties which has been neglected in the simulation. The color bar represents the angle between the direction of the local polarization and external electric field. (d) Simulated strain-electric field loop (S-E loop) of the PZT skeleton in ‘3-3’ and ‘3-3-3’ composites. The electric field, polarization and strain in the simulations are all normalized.
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