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

Khansur NH, Hinterstein M, Wang Z, Groh C, Jo W, Daniels JE (2015)

Publication Language: English

Publication Status: Published

Publication Type: Journal article

Publication year: 2015

Journal

Applied Physics Letters American Institute of Physics (AIP)

Publisher: American Institute of Physics (AIP)

Book Volume: 107

Journal Issue: 24

DOI: 10.1063/1.4937470

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.

Authors with CRIS profile

Neamul Hayet Khansur Lehrstuhl für Glas und Keramik

Involved external institutions

University of New South Wales (UNSW) AU Australia (AU) Technische Universität Darmstadt DE Germany (DE) Ulsan National Institute of Science and Technology (UNIST) / 울산과학기술원 KR Korea, Republic of (KR)

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://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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