Wei, Qiumei ; Riaz, Adeel ; Zhukov, Sergey ; Hofmann, Kathrin ; Zhu, Mankang ; Hou, Yudong ; Rödel, Jürgen ; Kodumudi Venkataraman, Lalitha (2023)
Quenching‐circumvented ergodicity in relaxor Na₁/₂Bi₁/₂TiO₃‐BaTiO₃‐K₀.₅Na₀.₅NbO₃.
In: Journal of the American Ceramic Society, 2021, 104 (7)
doi: 10.26083/tuprints-00020147
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
Quenching alkaline bismuth titanates from sintering temperatures results in increased lattice distortion and consequently higher depolarization temperature. This work investigates the influence of quenching on the ergodicity of relaxor Na₁/₂Bi₁/₂TiO₃‐BaTiO₃‐K₀.₅Na₀.₅NbO₃. A distinct departure from ergodicity is evidenced from the increase in remanent polarization and the absence of frequency dispersion in the permittivity response of poled samples. Further, the samples exhibit enhanced negative strain upon application of electric field, indicating proclivity towards correlated polar nanoregions, corroborated by the enhanced tetragonal distortion. As a result, ergodic relaxor Na₁/₂Bi₁/₂TiO₃‐6BaTiO₃‐3K₀.₅Na₀.₅NbO₃ exhibits a depolarization temperature of 85°C with a 60% increase in remanent polarization and approximately a threefold increase in remanent strain upon quenching. Quenching‐induced changes in the local environment of Na⁺ and Bi³⁺ cations hinder the development of ergodicity promoted by the A‐site disorder. These results provide new insight into tailoring ergodicity of relaxor ferroelectrics.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Wei, Qiumei ; Riaz, Adeel ; Zhukov, Sergey ; Hofmann, Kathrin ; Zhu, Mankang ; Hou, Yudong ; Rödel, Jürgen ; Kodumudi Venkataraman, Lalitha |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Quenching‐circumvented ergodicity in relaxor Na₁/₂Bi₁/₂TiO₃‐BaTiO₃‐K₀.₅Na₀.₅NbO₃ |
| Sprache: | Englisch |
| Publikationsjahr: | 22 Dezember 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2021 |
| Ort der Erstveröffentlichung: | Oxford |
| Verlag: | Wiley-Blackwell |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 104 |
| (Heft-)Nummer: | 7 |
| DOI: | 10.26083/tuprints-00020147 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/20147 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | Quenching alkaline bismuth titanates from sintering temperatures results in increased lattice distortion and consequently higher depolarization temperature. This work investigates the influence of quenching on the ergodicity of relaxor Na₁/₂Bi₁/₂TiO₃‐BaTiO₃‐K₀.₅Na₀.₅NbO₃. A distinct departure from ergodicity is evidenced from the increase in remanent polarization and the absence of frequency dispersion in the permittivity response of poled samples. Further, the samples exhibit enhanced negative strain upon application of electric field, indicating proclivity towards correlated polar nanoregions, corroborated by the enhanced tetragonal distortion. As a result, ergodic relaxor Na₁/₂Bi₁/₂TiO₃‐6BaTiO₃‐3K₀.₅Na₀.₅NbO₃ exhibits a depolarization temperature of 85°C with a 60% increase in remanent polarization and approximately a threefold increase in remanent strain upon quenching. Quenching‐induced changes in the local environment of Na⁺ and Bi³⁺ cations hinder the development of ergodicity promoted by the A‐site disorder. These results provide new insight into tailoring ergodicity of relaxor ferroelectrics. |
| Freie Schlagworte: | ferroelectricity/ferroelectric materials, lead‐free ceramics, relaxors |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-201476 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie |
| 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 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Physikalische Chemie |
| Hinterlegungsdatum: | 22 Dez 2023 13:22 |
| Letzte Änderung: | 28 Dez 2023 07:19 |
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Verfügbare Versionen dieses Eintrags
- Quenching‐circumvented ergodicity in relaxor Na₁/₂Bi₁/₂TiO₃‐BaTiO₃‐K₀.₅Na₀.₅NbO₃. (deposited 22 Dez 2023 13:22) [Gegenwärtig angezeigt]
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