Ding, Hui ; Zhang, Mao‐Hua ; Koruza, Jurij ; Molina‐Luna, Leopoldo ; Kleebe, Hans‐Joachim (2023)
Domain morphology of newly designed lead‐free antiferroelectric NaNbO₃‐SrSnO₃ ceramics.
In: Journal of the American Ceramic Society, 2021, 104 (7)
doi: 10.26083/tuprints-00023720
Artikel, Zweitveröffentlichung, Verlagsversion
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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 crystallography and 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: | 2023 |
| Autor(en): | Ding, Hui ; Zhang, Mao‐Hua ; Koruza, Jurij ; Molina‐Luna, Leopoldo ; Kleebe, Hans‐Joachim |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Domain morphology of newly designed lead‐free antiferroelectric NaNbO₃‐SrSnO₃ ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 28 November 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-00023720 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/23720 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| 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 crystallography and 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 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-237201 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie |
| 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 |
| Hinterlegungsdatum: | 28 Nov 2023 10:27 |
| Letzte Änderung: | 29 Nov 2023 10:28 |
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- Domain morphology of newly designed lead‐free antiferroelectric NaNbO₃‐SrSnO₃ ceramics. (deposited 28 Nov 2023 10:27) [Gegenwärtig angezeigt]
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