Ding, Hui ; Zhang, Mao-Hua ; Koruza, Jurij ; Molina-Luna, Leopoldo ; Kleebe, Hans-Joachim (2021)
Domain morphology of newly designed lead-free antiferroelectric NaNbO3-SrSnO3 ceramics.
In: Journal of the American Ceramic Society, 104 (7)
doi: 10.1111/jace.17738
Artikel, Bibliographie
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Kurzbeschreibung (Abstract)
Reversible antiferroelectric-ferroelectric phase transitions were recently observed in a series of SrSnO3-modified NaNbO3 lead-free antiferroelectric materials, exhibiting well-defined double polarization hysteresis loops at ambient conditions. Here, transmission electron microscopy was employed to investigate the crystallographyand domain configuration of this newly designed system via electron diffraction and centered dark-field imaging. It was confirmed that antiferroelectricity is maintained in all compositions, manifested by the characteristic ¼ superlattice reflections in the electron-diffraction patterns. By investigating the antiferroelectric domains and domain boundaries in NaNbO3, we demonstrate that antiphase boundaries are present and their irregular periodicity is responsible for the streaking features along the ¼ superlattice reflections in the electron-diffraction patterns. The signature domain blocks observed in pure NaNbO3 are maintained in the SrSnO3-modified ceramics, but disappear when the amount of SrSnO3 reaches 7 mol.%. In particular, a well-defined and distinct domain configuration is observed in the NaNbO3 sample modified with 5 mol.% SrSnO3, which presents a parallelogram domain morphology.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Ding, Hui ; Zhang, Mao-Hua ; Koruza, Jurij ; Molina-Luna, Leopoldo ; Kleebe, Hans-Joachim |
| Art des Eintrags: | Bibliographie |
| Titel: | Domain morphology of newly designed lead-free antiferroelectric NaNbO3-SrSnO3 ceramics |
| 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.17738 |
| URL / URN: | https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.17... |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Reversible antiferroelectric-ferroelectric phase transitions were recently observed in a series of SrSnO3-modified NaNbO3 lead-free antiferroelectric materials, exhibiting well-defined double polarization hysteresis loops at ambient conditions. Here, transmission electron microscopy was employed to investigate the crystallographyand domain configuration of this newly designed system via electron diffraction and centered dark-field imaging. It was confirmed that antiferroelectricity is maintained in all compositions, manifested by the characteristic ¼ superlattice reflections in the electron-diffraction patterns. By investigating the antiferroelectric domains and domain boundaries in NaNbO3, we demonstrate that antiphase boundaries are present and their irregular periodicity is responsible for the streaking features along the ¼ superlattice reflections in the electron-diffraction patterns. The signature domain blocks observed in pure NaNbO3 are maintained in the SrSnO3-modified ceramics, but disappear when the amount of SrSnO3 reaches 7 mol.%. In particular, a well-defined and distinct domain configuration is observed in the NaNbO3 sample modified with 5 mol.% SrSnO3, which presents a parallelogram domain morphology. |
| Freie Schlagworte: | TEM, lead-free antiferroelectrics, sodium niobate, domain morphology, antiphase boundary |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Geomaterialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Elektronenmikroskopie 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe LOEWE LOEWE > LOEWE-Schwerpunkte LOEWE > LOEWE-Schwerpunkte > FLAME - Fermi Level Engineering Antiferroelektrischer Materialien für Energiespeicher und Isolatoren |
| Hinterlegungsdatum: | 10 Mai 2021 06:14 |
| Letzte Änderung: | 29 Nov 2023 10:28 |
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Verfügbare Versionen dieses Eintrags
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Domain morphology of newly designed lead‐free antiferroelectric NaNbO₃‐SrSnO₃ ceramics. (deposited 28 Nov 2023 10:27)
- Domain morphology of newly designed lead-free antiferroelectric NaNbO3-SrSnO3 ceramics. (deposited 10 Mai 2021 06:14) [Gegenwärtig angezeigt]
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