Wohninsland, Andreas ; Fetzer, Ann-Katrin ; Riaz, Adeel ; Kleebe, Hans-Joachim ; Rödel, Jürgen ; Kodumudi Venkataraman, Lalitha (2021)
Correlation between enhanced lattice distortion and volume fraction of polar nanoregions in quenched Na1/2Bi1/2TiO3–BaTiO3 ceramics.
In: Applied Physics Letters, 118 (7)
doi: 10.1063/5.0039369
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Quenching has been established as a viable method to increase the depolarization temperature in (100-x) Na1/2Bi1/2TiO3–xBaTiO3 (NBT–xBT). The proposed hypothesis of a stabilized ferroelectric order would entail changes in the polarized volume. To this end, air-quenched and furnace cooled samples of four compositions of NBT–xBT with x¼3, 6, 9, and 12 mol. % BT were studied. Upon quenching, all the compositions demonstrate an increase in the ferroelectric to relaxor transition temperature, TF-R, by 23–44°C and enhanced lattice distortion. Resonance frequency damping analysis was utilized to measure Young’s modulus in the temperature range of 25°C to 800°C and to estimate the volume fraction of polar nanoregions using a composite model. Quenching leads to an 8% decrease in Young’s modulus, but to an increase in the volume fraction of polar nanoregions by 12% at 300 °C for NBT-6BT. Transmission electron microscopy investigations of quenched NBT-6BT reveal a combination of lamellar domains and more homogenous areas with nanometersized domains. The existence of lamellar domains in quenched morphotropic phase boundary compositions together with enhanced lattice distortion and a decrease in dielectric frequency dispersion substantiate the premise of a stabilized ferroelectric order.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Wohninsland, Andreas ; Fetzer, Ann-Katrin ; Riaz, Adeel ; Kleebe, Hans-Joachim ; Rödel, Jürgen ; Kodumudi Venkataraman, Lalitha |
| Art des Eintrags: | Bibliographie |
| Titel: | Correlation between enhanced lattice distortion and volume fraction of polar nanoregions in quenched Na1/2Bi1/2TiO3–BaTiO3 ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 17 Februar 2021 |
| Verlag: | American Institute of Physics Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| Jahrgang/Volume einer Zeitschrift: | 118 |
| (Heft-)Nummer: | 7 |
| DOI: | 10.1063/5.0039369 |
| URL / URN: | https://aip.scitation.org/doi/10.1063/5.0039369 |
| Kurzbeschreibung (Abstract): | Quenching has been established as a viable method to increase the depolarization temperature in (100-x) Na1/2Bi1/2TiO3–xBaTiO3 (NBT–xBT). The proposed hypothesis of a stabilized ferroelectric order would entail changes in the polarized volume. To this end, air-quenched and furnace cooled samples of four compositions of NBT–xBT with x¼3, 6, 9, and 12 mol. % BT were studied. Upon quenching, all the compositions demonstrate an increase in the ferroelectric to relaxor transition temperature, TF-R, by 23–44°C and enhanced lattice distortion. Resonance frequency damping analysis was utilized to measure Young’s modulus in the temperature range of 25°C to 800°C and to estimate the volume fraction of polar nanoregions using a composite model. Quenching leads to an 8% decrease in Young’s modulus, but to an increase in the volume fraction of polar nanoregions by 12% at 300 °C for NBT-6BT. Transmission electron microscopy investigations of quenched NBT-6BT reveal a combination of lamellar domains and more homogenous areas with nanometersized domains. The existence of lamellar domains in quenched morphotropic phase boundary compositions together with enhanced lattice distortion and a decrease in dielectric frequency dispersion substantiate the premise of a stabilized ferroelectric order. |
| 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: | 19 Feb 2021 07:07 |
| Letzte Änderung: | 19 Feb 2021 07:07 |
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