Kodumudi Venkataraman, Lalitha ; Koruza, Jurij ; Rödel, Jürgen (2019)
Mechanical versus electromechanical hardening in relaxor ferroelectric
Na1/2Bi1/2TiO3-BaTiO3 with ZnO inclusions.
In: Scripta Materialia, 2019 (169)
doi: 10.1016/j.scriptamat.2019.05.013
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The stress-strain response of composites constituting relaxor 0.94Na1/2Bi1/2TiO3–0.06BaTiO3 matrix phase with ZnO inclusions is investigated. The ZnO inclusions are found to increase the transformation stress (unpoled) for the relaxor-ferroelectric transformation and the coercive stress (poled) for domain switching. The plastic and remanent strain decreaseswith increasing volume fraction of the hard ZnO inclusions. Thismechanical hardening mechanism is contrasted quantitatively to electromechanical hardening by comparing the transformation stress and coercive stress to the poling field and coercive field respectively, as well as the corresponding plastic strain from mechanical loading to the total strain quantified by electric field loading.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Kodumudi Venkataraman, Lalitha ; Koruza, Jurij ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Mechanical versus electromechanical hardening in relaxor ferroelectric Na1/2Bi1/2TiO3-BaTiO3 with ZnO inclusions |
| Sprache: | Englisch |
| Publikationsjahr: | August 2019 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Scripta Materialia |
| Jahrgang/Volume einer Zeitschrift: | 2019 |
| (Heft-)Nummer: | 169 |
| DOI: | 10.1016/j.scriptamat.2019.05.013 |
| URL / URN: | https://doi.org/10.1016/j.scriptamat.2019.05.013 |
| Kurzbeschreibung (Abstract): | The stress-strain response of composites constituting relaxor 0.94Na1/2Bi1/2TiO3–0.06BaTiO3 matrix phase with ZnO inclusions is investigated. The ZnO inclusions are found to increase the transformation stress (unpoled) for the relaxor-ferroelectric transformation and the coercive stress (poled) for domain switching. The plastic and remanent strain decreaseswith increasing volume fraction of the hard ZnO inclusions. Thismechanical hardening mechanism is contrasted quantitatively to electromechanical hardening by comparing the transformation stress and coercive stress to the poling field and coercive field respectively, as well as the corresponding plastic strain from mechanical loading to the total strain quantified by electric field loading. |
| Freie Schlagworte: | Lead-free ferroelectrics Mechanical hardening Ferroelasticity Mechanical versus electromechanical hardening Piezoelectrics |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe |
| Hinterlegungsdatum: | 06 Jun 2019 06:40 |
| Letzte Änderung: | 06 Jun 2019 06:40 |
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