Vögler, Malte ; Novak, Nikola ; Schader, Florian H. ; Rödel, Jürgen (2017)
Temperature-dependent volume fraction of polar nanoregions in
lead-free (1 − x)(Bi0.5Na0.5)TiO3-xBaTiO3 ceramics.
In: Physical Review B, 95
doi: 10.1103/PhysRevB.95.024104
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The formation and temperature evolution of polar nanoregions (PNRs) in relaxor ferroelectrics is an intriguing issue that is still under debate. Therefore, we present an approach to estimate the volume fraction of PNRs by the example of the relaxor ferroelectric, (1 − x)(Bi0.5Na0.5)TiO3-xBaTiO3 (BNT-xBT). A detailed analysis of the Young’s modulus, which is highly sensitive to small structural distortions, at temperatures 25 ◦C< T <800 ◦C for both poled and unpoled samples, is correlated to the temperature evolution of PNRs by utilizing a composite model. The extracted volume fraction of the PNRs and the increasing Young’s modulus above the formerly suggested Burns temperature indicate that the formation of the PNRs does not occur at a defined temperature but rather in a broad temperature range starting around ∼720 ◦C.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Vögler, Malte ; Novak, Nikola ; Schader, Florian H. ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Temperature-dependent volume fraction of polar nanoregions in lead-free (1 − x)(Bi0.5Na0.5)TiO3-xBaTiO3 ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | 4 Januar 2017 |
| Verlag: | American Physical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review B |
| Jahrgang/Volume einer Zeitschrift: | 95 |
| DOI: | 10.1103/PhysRevB.95.024104 |
| Kurzbeschreibung (Abstract): | The formation and temperature evolution of polar nanoregions (PNRs) in relaxor ferroelectrics is an intriguing issue that is still under debate. Therefore, we present an approach to estimate the volume fraction of PNRs by the example of the relaxor ferroelectric, (1 − x)(Bi0.5Na0.5)TiO3-xBaTiO3 (BNT-xBT). A detailed analysis of the Young’s modulus, which is highly sensitive to small structural distortions, at temperatures 25 ◦C< T <800 ◦C for both poled and unpoled samples, is correlated to the temperature evolution of PNRs by utilizing a composite model. The extracted volume fraction of the PNRs and the increasing Young’s modulus above the formerly suggested Burns temperature indicate that the formation of the PNRs does not occur at a defined temperature but rather in a broad temperature range starting around ∼720 ◦C. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 06 Jan 2017 07:39 |
| Letzte Änderung: | 06 Jan 2017 07:39 |
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