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Self-poling and electromechanical response of crystallographically textured PMN-32PT prepared by templated grain growth

Journal Article


Abstract


  • Crystallographic texturing of ferroelectrics is known to improve the piezoelectrics response due to the alignment of optimal grain orientations in polycrystalline materials. Using high-energy x-ray diffraction, a ferroelastic self-poling effect was observed in crystallographically textured 0.68��Pb(Mg1/3Nb2/3)O3��� 0.32PbTiO3 ceramic. It is shown that the BaTiO3 platelet templates used to induce crystallographic texture imposed a biaxial strain causing ferroelastic domains to re-orient parallel to the template plate normal. In-situ high-energy x-ray diffraction was then used to characterize the response mechanisms of the material with applied electric fields. The textured ceramic produced a (111) lattice strain of 0.13% in the remanent state, and a 0.16% (111) unipolar lattice strain at 2��kV/mm while the untextured ceramic had a higher (111) lattice strain of 0.18% in the remanent state and a smaller (111) unipolar lattice strain at 2��kV/mm of 0.096%. This contrast in the strain magnitudes can be linked to the self-poling effect. A strain mechanism incorporating the self-poling effect is proposed, furthering our understanding of how crystallographic texture impacts the piezoelectric properties and providing a pathway for engineering the self-poling effect to further enhance material response.

Publication Date


  • 2022

Citation


  • Kong, S., Moriana, A., Zhang, S., Checchia, S., & Daniels, J. E. (2022). Self-poling and electromechanical response of crystallographically textured PMN-32PT prepared by templated grain growth. Journal of the American Ceramic Society, 105(5), 3581-3589. doi:10.1111/jace.18315

Scopus Eid


  • 2-s2.0-85122758002

Start Page


  • 3581

End Page


  • 3589

Volume


  • 105

Issue


  • 5

Place Of Publication


Abstract


  • Crystallographic texturing of ferroelectrics is known to improve the piezoelectrics response due to the alignment of optimal grain orientations in polycrystalline materials. Using high-energy x-ray diffraction, a ferroelastic self-poling effect was observed in crystallographically textured 0.68��Pb(Mg1/3Nb2/3)O3��� 0.32PbTiO3 ceramic. It is shown that the BaTiO3 platelet templates used to induce crystallographic texture imposed a biaxial strain causing ferroelastic domains to re-orient parallel to the template plate normal. In-situ high-energy x-ray diffraction was then used to characterize the response mechanisms of the material with applied electric fields. The textured ceramic produced a (111) lattice strain of 0.13% in the remanent state, and a 0.16% (111) unipolar lattice strain at 2��kV/mm while the untextured ceramic had a higher (111) lattice strain of 0.18% in the remanent state and a smaller (111) unipolar lattice strain at 2��kV/mm of 0.096%. This contrast in the strain magnitudes can be linked to the self-poling effect. A strain mechanism incorporating the self-poling effect is proposed, furthering our understanding of how crystallographic texture impacts the piezoelectric properties and providing a pathway for engineering the self-poling effect to further enhance material response.

Publication Date


  • 2022

Citation


  • Kong, S., Moriana, A., Zhang, S., Checchia, S., & Daniels, J. E. (2022). Self-poling and electromechanical response of crystallographically textured PMN-32PT prepared by templated grain growth. Journal of the American Ceramic Society, 105(5), 3581-3589. doi:10.1111/jace.18315

Scopus Eid


  • 2-s2.0-85122758002

Start Page


  • 3581

End Page


  • 3589

Volume


  • 105

Issue


  • 5

Place Of Publication