Kodumudi Venkataraman, Lalitha ; Koruza, Jurij ; Rödel, Jürgen (2018)
Propensity for spontaneous relaxor-ferroelectric transition in quenched(Na1/2Bi1/2)TiO3-BaTiO3 compositions.
In: Applied Physics Letters, 113 (252902)
doi: 10.1063/1.5053989
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Recently, quenching lead-free non-ergodic relaxor Na1/2Bi1/2TiO3-BaTiO3 (NBT-BT) materials has been reported to increase the thermal depolarization temperature and enhance the lattice distortion. Driven by the conjecture that enhanced lattice distortion is typically associated with the onset of ferroelectric order, two non-ergodic relaxor NBT-BT compositions at the morphotropic phase boundary were investigated. As evident from the temperature-dependent permittivity, both compositions exhibit a stabilization of ferroelectric order upon quenching. An increase in the depolarization temperature by 40–60°C is observed. Moreover, the composition with higher tetragonality undergoes a spontaneous relaxor-ferroelectric transition upon quenching. Annealing in oxygen atmosphere is shown to revert back the quenching-induced ferroelectric order to the relaxor state. Published by AIP Publishing.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | Kodumudi Venkataraman, Lalitha ; Koruza, Jurij ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Propensity for spontaneous relaxor-ferroelectric transition in quenched(Na1/2Bi1/2)TiO3-BaTiO3 compositions |
| Sprache: | Englisch |
| Publikationsjahr: | 21 Dezember 2018 |
| Verlag: | AIP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| Jahrgang/Volume einer Zeitschrift: | 113 |
| (Heft-)Nummer: | 252902 |
| DOI: | 10.1063/1.5053989 |
| Kurzbeschreibung (Abstract): | Recently, quenching lead-free non-ergodic relaxor Na1/2Bi1/2TiO3-BaTiO3 (NBT-BT) materials has been reported to increase the thermal depolarization temperature and enhance the lattice distortion. Driven by the conjecture that enhanced lattice distortion is typically associated with the onset of ferroelectric order, two non-ergodic relaxor NBT-BT compositions at the morphotropic phase boundary were investigated. As evident from the temperature-dependent permittivity, both compositions exhibit a stabilization of ferroelectric order upon quenching. An increase in the depolarization temperature by 40–60°C is observed. Moreover, the composition with higher tetragonality undergoes a spontaneous relaxor-ferroelectric transition upon quenching. Annealing in oxygen atmosphere is shown to revert back the quenching-induced ferroelectric order to the relaxor state. Published by AIP Publishing. |
| 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: | 03 Jan 2019 07:55 |
| Letzte Änderung: | 03 Jan 2019 07:55 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum