Influence of stress on the electromechanical properties and the phase transitions of lead-free (1-x)Ba(Zr0.2Ti0.8)O-3-x(Ba0.7Ca0.3)TiO3

Gadelmawla A, Dobesh D, Eckstein U, Grübl O, Ehmke M, Cicconi MR, Khansur NH, de Ligny D, Webber KG (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Journal of Materials Science Springer Verlag (Germany)

DOI: 10.1007/s10853-022-07685-9

Abstract

The influence of stress on the phase boundaries of polycrystalline lead-free perovskite (1 - x)Ba(Zr0.2Ti0.8)O-3-x(Ba0.7Ca0.3)TiO3 (x = 0.4, 0.5, and 0.6) was characterized through the temperature- and stress-dependent small-signal dielectric and piezoelectric response from - 150 to 200 degrees C under uniaxial compressive stress up to - 75 MPa. For all three compositions, the phase transition temperatures separating the rhombohedral, orthorhombic, tetragonal, and cubic phases were shifted to higher temperatures with an increase in the uniaxial mechanical loading, corresponding to a significant decrease in the dielectric and piezoelectric responses. Additional stress-dependent relative permittivity measurements up to - 260 MPa were conducted at four different constant temperatures (- 10, 10, 25, and 40 degrees C), revealing significant increases in the dielectric response, making these materials interesting for tunable dielectric applications. Furthermore, the stress-induced shift in phase transition temperatures was confirmed by in situ combined temperature- and stress-dependent Raman spectroscopy measurements under different constant uniaxial loads within the temperature range from 30 to 130 degrees C.

Authors with CRIS profile

Ahmed Gadelmawla Lehrstuhl für Glas und Keramik David Dobesh Professur für Werkstoffwissenschaften (Glas und Keramik) Udo Eckstein Lehrstuhl für Glas und Keramik Oliver Grübl Lehrstuhl für Glas und Keramik Maria Rita Cicconi Lehrstuhl für Glas und Keramik Neamul Hayet Khansur Lehrstuhl für 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)

Related research project(s)

Formulation and Crystallization of Perovskite Bearing Glass-Ceramics for Light Management (Project G IGK 2495) IGK 2495: Energy Conversion Systems: From Materials to Devices (IGK 2495) Jan. 1, 2020 - June 30, 2024

Involved external institutions

Purdue-University US United States (USA) (US)

How to cite

APA:

Gadelmawla, A., Dobesh, D., Eckstein, U., Grübl, O., Ehmke, M., Cicconi, M.R.,... Webber, K.G. (2022). Influence of stress on the electromechanical properties and the phase transitions of lead-free (1-x)Ba(Zr0.2Ti0.8)O-3-x(Ba0.7Ca0.3)TiO3. Journal of Materials Science. https://doi.org/10.1007/s10853-022-07685-9

MLA:

Gadelmawla, Ahmed, et al. "Influence of stress on the electromechanical properties and the phase transitions of lead-free (1-x)Ba(Zr0.2Ti0.8)O-3-x(Ba0.7Ca0.3)TiO3." Journal of Materials Science (2022).

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