Acosta, Matias ; Zang, Jiadong ; Jo, Wook ; Rödel, Jürgen (2012)
High-temperature dielectrics in CaZrO3-modified Bi1/2Na1/2TiO3-based lead-free ceramics.
In: Journal of the European Ceramic Society, 32 (16)
doi: 10.1016/j.jeurceramsoc.2012.06.011
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Materials in two composition regimes, Bi1/2Na1/2TiO3–BaTiO3–CaZrO3 (BNT–BT–CZ) and Bi1/2Na1/2TiO3–BaTiO3–K0.5Na0.5NbO3–CaZrO3 (BNT–BT–KNN–CZ), were synthesized via the mixed oxide route and their structural, dielectric and electrical properties were investigated. CZ was identified to render the two local maxima in permittivity more diffused. This resulted in temperature-insensitive relative permittivity spectra with average values from ∼470 up to ∼2300 and operational windows of at least ∼400 °C with less than 15% of variation in the temperature range from −100 up to above 500 °C. Moreover, loss factors are below ∼10% and RC constants range from ∼0.03 s up to ∼4 s at 300 °C. The materials of current investigation are highly attractive for developing capacitors of wide temperature usage.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Acosta, Matias ; Zang, Jiadong ; Jo, Wook ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | High-temperature dielectrics in CaZrO3-modified Bi1/2Na1/2TiO3-based lead-free ceramics |
| Sprache: | Englisch |
| Publikationsjahr: | Dezember 2012 |
| Verlag: | Elsevier Science Publishing Company |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of the European Ceramic Society |
| Jahrgang/Volume einer Zeitschrift: | 32 |
| (Heft-)Nummer: | 16 |
| DOI: | 10.1016/j.jeurceramsoc.2012.06.011 |
| Kurzbeschreibung (Abstract): | Materials in two composition regimes, Bi1/2Na1/2TiO3–BaTiO3–CaZrO3 (BNT–BT–CZ) and Bi1/2Na1/2TiO3–BaTiO3–K0.5Na0.5NbO3–CaZrO3 (BNT–BT–KNN–CZ), were synthesized via the mixed oxide route and their structural, dielectric and electrical properties were investigated. CZ was identified to render the two local maxima in permittivity more diffused. This resulted in temperature-insensitive relative permittivity spectra with average values from ∼470 up to ∼2300 and operational windows of at least ∼400 °C with less than 15% of variation in the temperature range from −100 up to above 500 °C. Moreover, loss factors are below ∼10% and RC constants range from ∼0.03 s up to ∼4 s at 300 °C. The materials of current investigation are highly attractive for developing capacitors of wide temperature usage. |
| Freie Schlagworte: | Dielectric properties; Electrical conductivity; Ferroelectric properties; Capacitors; Relaxor |
| 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: | 27 Sep 2012 07:45 |
| Letzte Änderung: | 05 Mär 2013 10:03 |
| PPN: | |
| Sponsoren: | This research was graciously supported by the Leibniz program of the Deutsche Forschungsgemeinschaft under RO 954/22-1. |
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