Tran, Vu Diem Ngoc ; Han, Hyoung-Su ; Yoon, Chang-Ho ; Lee, Jae-Shin ; Jo, Wook ; Rödel, Jürgen (2011)
Lead-free electrostrictive bismuth perovskite ceramics with thermally stable field-induced strains.
In: Materials Letters, 65 (17-18)
doi: 10.1016/j.matlet.2011.05.059
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Electric field-induced strain (EFIS) properties of Bi1/2(Na0.82K0.18)1/2TiO3 (BNKT) ceramics modified with Sr(K1/4Nb3/4)O3 (SKN) have been investigated as functions of composition and temperature. BNKT ceramics near a phase boundary revealed the coexistence of ferroelectric rhombohedral and tetragonal phases, resulting in a typical ferroelectric butterfly-shaped bipolar S–E loop at room temperature, whose normalized strain (Smax/Emax) showed a significant temperature coefficient of 0.38 pm/V/K. However, 5 mol% SKN-modified BNKT ceramics revealed a typical electrostrictive behaviour with a thermally stable electrostrictive coefficient, Q33 = 0.021 m4/C2, which is almost comparable to that of Pb(Mg1/3Nb2/3)O3 (PMN) ceramics that have been dominantly used as Pb-based electrostrictive materials over the last decades.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Tran, Vu Diem Ngoc ; Han, Hyoung-Su ; Yoon, Chang-Ho ; Lee, Jae-Shin ; Jo, Wook ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Lead-free electrostrictive bismuth perovskite ceramics with thermally stable field-induced strains |
| Sprache: | Englisch |
| Publikationsjahr: | September 2011 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Materials Letters |
| Jahrgang/Volume einer Zeitschrift: | 65 |
| (Heft-)Nummer: | 17-18 |
| DOI: | 10.1016/j.matlet.2011.05.059 |
| Kurzbeschreibung (Abstract): | Electric field-induced strain (EFIS) properties of Bi1/2(Na0.82K0.18)1/2TiO3 (BNKT) ceramics modified with Sr(K1/4Nb3/4)O3 (SKN) have been investigated as functions of composition and temperature. BNKT ceramics near a phase boundary revealed the coexistence of ferroelectric rhombohedral and tetragonal phases, resulting in a typical ferroelectric butterfly-shaped bipolar S–E loop at room temperature, whose normalized strain (Smax/Emax) showed a significant temperature coefficient of 0.38 pm/V/K. However, 5 mol% SKN-modified BNKT ceramics revealed a typical electrostrictive behaviour with a thermally stable electrostrictive coefficient, Q33 = 0.021 m4/C2, which is almost comparable to that of Pb(Mg1/3Nb2/3)O3 (PMN) ceramics that have been dominantly used as Pb-based electrostrictive materials over the last decades. |
| Freie Schlagworte: | Piezoelectric materials; Perovskites; Ferroelectrics; Ceramics |
| Zusätzliche Informationen: | SFB 595 A1 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > A - Synthese > Teilprojekt A1: Herstellung keramischer, texturierter Akuatoren mit hoher Dehnung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > A - Synthese DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung 11 Fachbereich Material- und Geowissenschaften Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche DFG-Sonderforschungsbereiche (inkl. Transregio) |
| Hinterlegungsdatum: | 05 Jul 2011 13:30 |
| Letzte Änderung: | 05 Mär 2013 09:50 |
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