Brillouin spectroscopy study of the stress-induced ferroelectric order in lead-free relaxor 0.93(Na1/2Bi1/2)TiO3-0.07BaTiO3 ceramics

Martin A, Brehl M, Khansur NH, Werr F, de Ligny D, Webber KG (2022)


Publication Type: Journal article

Publication year: 2022

Journal

Book Volume: 238

Pages Range: 118218

Article Number: 118218

DOI: 10.1016/j.actamat.2022.118218

Open Access Link: https://doi.org/10.1016/j.actamat.2022.118218

Abstract

In this study, in situ stress-dependent Raman and Brillouin spectroscopy has been performed on polycrystalline 0.93(Na1/2Bi1/2)TiO3-0.07BaTiO3 (NBT-7BT). Brillouin scattering revealed stress-dependent changes in the elastic properties around the onset stress as well as the appearance of a transversal acoustic wave mode at elevated stress levels, which is understood to be due to the formation of long-range order. These data were compared with additional Raman scattering measurements, ex situ x-ray diffraction, and macroscopic stress-strain behavior, which revealed analogous changes in the apparent crystallographic structure and ferroelectric order in the vicinity of the onset and coercive stresses.

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APA:

Martin, A., Brehl, M., Khansur, N.H., Werr, F., de Ligny, D., & Webber, K.G. (2022). Brillouin spectroscopy study of the stress-induced ferroelectric order in lead-free relaxor 0.93(Na1/2Bi1/2)TiO3-0.07BaTiO3 ceramics. Acta Materialia, 238, 118218. https://dx.doi.org/10.1016/j.actamat.2022.118218

MLA:

Martin, Alexander, et al. "Brillouin spectroscopy study of the stress-induced ferroelectric order in lead-free relaxor 0.93(Na1/2Bi1/2)TiO3-0.07BaTiO3 ceramics." Acta Materialia 238 (2022): 118218.

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