Zang, Jiadong ; Li, Ming ; Sinclair, Derek C. ; Jo, Wook ; Rödel, Jürgen ; Zhang, S. (2014)
Impedance Spectroscopy of (Bi1/2Na1/2)TiO3-BaTiO3Ceramics Modified with (K0.5Na0.5)NbO3.
In: Journal of the American Ceramic Society, 97 (5)
doi: 10.1111/jace.12804
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The electrical and dielectric properties of (1 − x)(0.94Bi1/2Na1/2TiO3–0.06BaTiO3)–x(K0.5Na0.5NbO3) with x = 0, 0.03, 0.09, 0.18 have been investigated by impedance spectroscopy over a wide temperature range. The dc conductivity of the ceramics follows the Arrhenius law with an activation energy ranging from ~1.20 to 1.50 eV. Measurements under different atmospheres show the materials exhibit n-type semiconducting behavior at elevated temperatures. The presence of a highly polarizable phase for all compositions is revealed by electric modulus (M″) spectra. The Burns temperature decreases with increasing KNN content. The change in temperature-dependent permittivity with composition is explained by the difference in thermal evolution of polar nanoregions induced by the addition of KNN.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Zang, Jiadong ; Li, Ming ; Sinclair, Derek C. ; Jo, Wook ; Rödel, Jürgen ; Zhang, S. |
| Art des Eintrags: | Bibliographie |
| Titel: | Impedance Spectroscopy of (Bi1/2Na1/2)TiO3-BaTiO3Ceramics Modified with (K0.5Na0.5)NbO3 |
| Sprache: | Englisch |
| Publikationsjahr: | 14 Mai 2014 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the American Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 97 |
| (Heft-)Nummer: | 5 |
| DOI: | 10.1111/jace.12804 |
| Kurzbeschreibung (Abstract): | The electrical and dielectric properties of (1 − x)(0.94Bi1/2Na1/2TiO3–0.06BaTiO3)–x(K0.5Na0.5NbO3) with x = 0, 0.03, 0.09, 0.18 have been investigated by impedance spectroscopy over a wide temperature range. The dc conductivity of the ceramics follows the Arrhenius law with an activation energy ranging from ~1.20 to 1.50 eV. Measurements under different atmospheres show the materials exhibit n-type semiconducting behavior at elevated temperatures. The presence of a highly polarizable phase for all compositions is revealed by electric modulus (M″) spectra. The Burns temperature decreases with increasing KNN content. The change in temperature-dependent permittivity with composition is explained by the difference in thermal evolution of polar nanoregions induced by the addition of KNN. |
| 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: | 19 Mai 2014 10:41 |
| Letzte Änderung: | 19 Mai 2014 10:41 |
| PPN: | |
| Sponsoren: | Deutsche Forschungsgemeinschaft. Grant Number: RO 954/22 |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum