Journal article


Electric-field-induced strain contributions in morphotropic phase boundary composition of (Bi1/2Na1/2)TiO3-BaTiO3 during poling


Publication Details
Author(s): Khansur NH, Hinterstein M, Wang Z, Groh C, Jo W, Daniels JE
Publisher: American Institute of Physics (AIP)
Publication year: 2015
Volume: 107
Journal issue: 24
ISSN: 0003-6951
Language: English

Abstract

The microscopic contributions to the electric-field-induced macroscopic strain in a morphotropic 0.93(Bi1/2Na1/2TiO3)-0.07(BaTiO3) with a mixed rhombohedral and tetragonal structure have been quantified using full pattern Rietveld refinement of in situ high-energy x-ray diffraction data. The analysis methodology allows a quantification of all strain mechanisms for each phase in a morphotropic composition and is applicable to use in a wide variety of piezoelectric compositions. It is shown that during the poling of this material 24%, 44%, and 32% of the total macroscopic strain is generated from lattice strain, domain switching, and phase transformation strains, respectively. The results also suggest that the tetragonal phase contributes the most to extrinsic domain switching strain, whereas the lattice strain primarily stems from the rhombohedral phase. The analysis also suggests that almost 32% of the total strain is lost or is a one-time effect due to the irreversible nature of the electric-field-induced phase transformation in the current composition. This information is relevant to on-going compositional development strategies to harness the electric-field-induced phase transformation strain of (Bi1/2Na1/2)TiO3-based lead-free piezoelectric materials for actuator applications. (C) 2015 AIP Publishing LLC.



How to cite
APA: Khansur, N.H., Hinterstein, M., Wang, Z., Groh, C., Jo, W., & Daniels, J.E. (2015). Electric-field-induced strain contributions in morphotropic phase boundary composition of (Bi1/2Na1/2)TiO3-BaTiO3 during poling. Applied Physics Letters, 107(24). https://dx.doi.org/10.1063/1.4937470

MLA: Khansur, Neamul Hayet, et al. "Electric-field-induced strain contributions in morphotropic phase boundary composition of (Bi1/2Na1/2)TiO3-BaTiO3 during poling." Applied Physics Letters 107.24 (2015).

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