Wei, Qiumei ; Riaz, Adeel ; Zhukov, Sergey ; Hofmann, Kathrin ; Zhu, Mankang ; Hou, Yudong ; Rödel, Jürgen ; Kodumudi Venkataraman, Lalitha (2021)
Quenching- circumvented ergodicity in relaxor Na1/2Bi1/2TiO3- BaTiO3- K0.5Na 0.5NbO3.
In: Journal of the American Ceramic Society, 104 (7)
doi: 10.1111/jace.17708
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
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: | 2021 |
| Autor(en): | Wei, Qiumei ; Riaz, Adeel ; Zhukov, Sergey ; Hofmann, Kathrin ; Zhu, Mankang ; Hou, Yudong ; Rödel, Jürgen ; Kodumudi Venkataraman, Lalitha |
| Art des Eintrags: | Bibliographie |
| Titel: | Quenching- circumvented ergodicity in relaxor Na1/2Bi1/2TiO3- BaTiO3- K0.5Na 0.5NbO3 |
| Sprache: | Englisch |
| Publikationsjahr: | 7 Juli 2021 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 104 |
| (Heft-)Nummer: | 7 |
| DOI: | 10.1111/jace.17708 |
| URL / URN: | https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.17... |
| Zugehörige Links: | |
| 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 |
| 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: | 10 Mai 2021 06:18 |
| Letzte Änderung: | 28 Dez 2023 07:20 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
-
Quenching‐circumvented ergodicity in relaxor Na₁/₂Bi₁/₂TiO₃‐BaTiO₃‐K₀.₅Na₀.₅NbO₃. (deposited 22 Dez 2023 13:22)
- Quenching- circumvented ergodicity in relaxor Na1/2Bi1/2TiO3- BaTiO3- K0.5Na 0.5NbO3. (deposited 10 Mai 2021 06:18) [Gegenwärtig angezeigt]
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