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

Acta Materialia Elsevier

Book Volume: 238

Article Number: 118218

DOI: 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.

Authors with CRIS profile

Alexander Martin Lehrstuhl für Glas und Keramik Martin Brehl Professur für Werkstoffwissenschaften (Glas und Keramik) Neamul Hayet Khansur Lehrstuhl für Glas und Keramik Ferdinand Werr Professur für Werkstoffwissenschaften (Glas und Keramik) Dominique de Ligny Professur für Werkstoffwissenschaften (Glas und Keramik) Kyle Grant Webber Professur für Werkstoffwissenschaften (Funktionskeramik)

Additional Organisation(s)

Graduiertenkolleg 2495 Energiekonvertierungssysteme: von Materialien zu Bauteilen (Energy Conversion Systems: From Materials to Devices)

How to cite

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. 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).

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