Tran, Vu Diem Ngoc ; Dinh, Thi Hinh ; Han, Hyoung-Su ; Jo, Wook ; Lee, Jae-Shin (2013)
Lead-free Bi1/2(Na0.82K0.18)1/2TiO3 relaxor ferroelectrics with temperature insensitive electrostrictive coefficient.
In: Ceramics International, 39 (Supplement 1)
doi: 10.1016/j.ceramint.2012.10.046
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The electric field-induced strain of Bi1/2(Na0.82K0.18)1/2TiO3 (BNKT) ceramics modified with BaZrO3 (BZ) was investigated as a function of composition and temperature. Unmodified BNKT ceramics revealed 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. As the BZ content increased in the solid solution up to 5 mol%, the ferroelectric BNKT gradually transformed to a relaxor. Finally, 5 mol% BZ-modified BNKT ceramics showed a typical electrostrictive behavior with a thermally stable electrostrictive coefficient (Q33) of 0.025 m4/C2, which is comparable to that of Pb(Mg1/3Nb2/3)O3 (PMN) ceramics that have been primarily used as Pb-based electrostrictive materials.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2013 |
| Autor(en): | Tran, Vu Diem Ngoc ; Dinh, Thi Hinh ; Han, Hyoung-Su ; Jo, Wook ; Lee, Jae-Shin |
| Art des Eintrags: | Bibliographie |
| Titel: | Lead-free Bi1/2(Na0.82K0.18)1/2TiO3 relaxor ferroelectrics with temperature insensitive electrostrictive coefficient |
| Sprache: | Englisch |
| Publikationsjahr: | Mai 2013 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Ceramics International |
| Jahrgang/Volume einer Zeitschrift: | 39 |
| (Heft-)Nummer: | Supplement 1 |
| DOI: | 10.1016/j.ceramint.2012.10.046 |
| Kurzbeschreibung (Abstract): | The electric field-induced strain of Bi1/2(Na0.82K0.18)1/2TiO3 (BNKT) ceramics modified with BaZrO3 (BZ) was investigated as a function of composition and temperature. Unmodified BNKT ceramics revealed 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. As the BZ content increased in the solid solution up to 5 mol%, the ferroelectric BNKT gradually transformed to a relaxor. Finally, 5 mol% BZ-modified BNKT ceramics showed a typical electrostrictive behavior with a thermally stable electrostrictive coefficient (Q33) of 0.025 m4/C2, which is comparable to that of Pb(Mg1/3Nb2/3)O3 (PMN) ceramics that have been primarily used as Pb-based electrostrictive materials. |
| Freie Schlagworte: | Dielectric properties; Piezoelectric properties; Perovskites; Actuators |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 22 Apr 2013 08:50 |
| Letzte Änderung: | 22 Apr 2013 08:50 |
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