Kodumudi Venkataraman, Lalitha ; Hinterstein, Manuel ; Lee, Kai-Yang ; Yang, Tiannan ; Chen, Long-Qing ; Groszewicz, Pedro B. ; Koruza, Jurij ; Rödel, Jürgen (2020)
Spontaneous ferroelectric order in lead-free relaxor Na1/2Bi1/2TiO3-based composites.
In: Physical Review B, (101)
doi: 10.1103/PhysRevB.101.174108
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Short-range ordered polar nanoregions are key to the giant electromechanical properties exhibited by relaxorferroelectrics. Stabilization of the long-range ferroelectric order in relaxor systems has typically been achievedby applying external fields. In this work, spontaneous (zero-field) ferroelectric order is demonstrated inthe composites constituting of nonergodic relaxor matrix phase 0.91Na1/2Bi1/2TiO3-0.09BaTiO3with ZnOinclusions. Direct structural evidence is provided for the long-range ferroelectric order in the composites usingin situelectric-field-dependent synchrotron investigations and23Na nuclear magnetic resonance spectroscopy.Thermodynamic analysis incorporating microelasticity reveals the role of spatial residual stress in stabilizingthe ferroelectric order. The work provides a direct correlation between the stabilized ferroelectric order andenhanced thermal stability, which can be utilized to guide the design of spontaneous long-range order in otherrelaxor systems.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Kodumudi Venkataraman, Lalitha ; Hinterstein, Manuel ; Lee, Kai-Yang ; Yang, Tiannan ; Chen, Long-Qing ; Groszewicz, Pedro B. ; Koruza, Jurij ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Spontaneous ferroelectric order in lead-free relaxor Na1/2Bi1/2TiO3-based composites |
| Sprache: | Englisch |
| Publikationsjahr: | 15 Mai 2020 |
| Verlag: | American Physical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review B |
| (Heft-)Nummer: | 101 |
| DOI: | 10.1103/PhysRevB.101.174108 |
| Kurzbeschreibung (Abstract): | Short-range ordered polar nanoregions are key to the giant electromechanical properties exhibited by relaxorferroelectrics. Stabilization of the long-range ferroelectric order in relaxor systems has typically been achievedby applying external fields. In this work, spontaneous (zero-field) ferroelectric order is demonstrated inthe composites constituting of nonergodic relaxor matrix phase 0.91Na1/2Bi1/2TiO3-0.09BaTiO3with ZnOinclusions. Direct structural evidence is provided for the long-range ferroelectric order in the composites usingin situelectric-field-dependent synchrotron investigations and23Na nuclear magnetic resonance spectroscopy.Thermodynamic analysis incorporating microelasticity reveals the role of spatial residual stress in stabilizingthe ferroelectric order. The work provides a direct correlation between the stabilized ferroelectric order andenhanced thermal stability, which can be utilized to guide the design of spontaneous long-range order in otherrelaxor systems. |
| 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: | 19 Mai 2020 06:22 |
| Letzte Änderung: | 19 Mai 2020 06:22 |
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