TY - JOUR
T1 - Influence of poling condition on crystal-rod domain configuration in 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3single crystal/epoxy 1-3 composites
AU - Wang, Chunying
AU - Liu, Yingchun
AU - Zhang, Rui
AU - Yang, Bin
AU - Cao, Wenwu
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - Using the translucent nature of (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3single crystals, we have studied the changes of stress distributions and domain configuration inside the PMN-0.26PT and PMN-0.33PT single crystal rods embedded in 1–3 composites by polarizing light microscopy (PLM) and piezoresponse force microscopy (PFM). When the poling temperature is above the glass transition temperature of polymeric filler, the Young's modulus of the epoxy decreases significantly, leading to the interface stress on the rods decreased by up to 3 orders of magnitude, which was verified by finite element simulation using Comsol. In addition, high temperature (70 °C or 110 °C) poling causes reduced effect on the rod edges and improves the electromechanical coefficient by about 6% for the 1-3 composites. According to observed domain configurations, the extra boundary stress was insufficient to prevent polarization switching or to induce new phase, but crystal structural deformation was observed near the rod edges.
AB - Using the translucent nature of (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3single crystals, we have studied the changes of stress distributions and domain configuration inside the PMN-0.26PT and PMN-0.33PT single crystal rods embedded in 1–3 composites by polarizing light microscopy (PLM) and piezoresponse force microscopy (PFM). When the poling temperature is above the glass transition temperature of polymeric filler, the Young's modulus of the epoxy decreases significantly, leading to the interface stress on the rods decreased by up to 3 orders of magnitude, which was verified by finite element simulation using Comsol. In addition, high temperature (70 °C or 110 °C) poling causes reduced effect on the rod edges and improves the electromechanical coefficient by about 6% for the 1-3 composites. According to observed domain configurations, the extra boundary stress was insufficient to prevent polarization switching or to induce new phase, but crystal structural deformation was observed near the rod edges.
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U2 - 10.1016/j.jallcom.2016.12.357
DO - 10.1016/j.jallcom.2016.12.357
M3 - Article
AN - SCOPUS:85009070510
SN - 0925-8388
VL - 699
SP - 442
EP - 447
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -