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Thermal Depolarization in the High-Temperature Ternary Piezoelectric SystemxPbTiO3-yBiScO3-zBi(Ni1/2Ti1/2)O3

Ansell, Troy Y. ; Cann, David P. ; Sapper, Eva ; Rödel, Jürgen :
Thermal Depolarization in the High-Temperature Ternary Piezoelectric SystemxPbTiO3-yBiScO3-zBi(Ni1/2Ti1/2)O3.
[Online-Edition: http://dx.doi.org/10.1111/jace.13268]
In: Journal of the American Ceramic Society, 98 (2) pp. 455-463. ISSN 00027820
[Artikel], (2014)
Note:

SFB 595 D1

Offizielle URL: http://dx.doi.org/10.1111/jace.13268

Kurzbeschreibung (Abstract)

In the high-temperature ternary perovskite piezoelectric system xPbTiO3–yBiScO3–zBi(Ni1/2,Ti1/2)O3 (PT–BS–BNiT), the addition of bismuth to the A site and nickel to the B site leads to compositions that exhibit diffuse relaxor-like behavior. For these, depolarization temperature, not Curie point, is the critical value of temperature. Depolarization temperature (Td) is defined as the temperature at which the steepest loss in polarization occurs. This temperature is observed in poled materials through two different methods: loss tangent measurements and in situ d33. Across the ternary system, multiple dielectric anomalies occurred which was observed in dielectric tests where the dielectric peak broadens and becomes frequency dependent as BNiT content increased. For different compositions, the value of Td ranged between 275°C–375°C. Values for the piezoelectric coefficient increased with temperature up to d33 = 1000 pC/N during in situ d33. High temperature (up to 190°C) and high field (up to 40 kV/cm) were also applied to test ferroelectric properties in these regimes.

Typ des Eintrags: Artikel
Erschienen: 2014
Autor(en): Ansell, Troy Y. ; Cann, David P. ; Sapper, Eva ; Rödel, Jürgen
Titel: Thermal Depolarization in the High-Temperature Ternary Piezoelectric SystemxPbTiO3-yBiScO3-zBi(Ni1/2Ti1/2)O3
Sprache: Englisch
Kurzbeschreibung (Abstract):

In the high-temperature ternary perovskite piezoelectric system xPbTiO3–yBiScO3–zBi(Ni1/2,Ti1/2)O3 (PT–BS–BNiT), the addition of bismuth to the A site and nickel to the B site leads to compositions that exhibit diffuse relaxor-like behavior. For these, depolarization temperature, not Curie point, is the critical value of temperature. Depolarization temperature (Td) is defined as the temperature at which the steepest loss in polarization occurs. This temperature is observed in poled materials through two different methods: loss tangent measurements and in situ d33. Across the ternary system, multiple dielectric anomalies occurred which was observed in dielectric tests where the dielectric peak broadens and becomes frequency dependent as BNiT content increased. For different compositions, the value of Td ranged between 275°C–375°C. Values for the piezoelectric coefficient increased with temperature up to d33 = 1000 pC/N during in situ d33. High temperature (up to 190°C) and high field (up to 40 kV/cm) were also applied to test ferroelectric properties in these regimes.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of the American Ceramic Society
Band: 98
(Heft-)Nummer: 2
Fachbereich(e)/-gebiet(e): Fachbereich Material- und Geowissenschaften > Materialwissenschaften > Nichtmetallisch-Anorganische Werkstoffe
Zentrale Einrichtungen > Sonderforschungsbereich 595 > D - Bauteileigenschaften > D1
Fachbereich Material- und Geowissenschaften > Materialwissenschaften
Zentrale Einrichtungen > Sonderforschungsbereich 595 > D - Bauteileigenschaften
Zentrale Einrichtungen > Sonderforschungsbereich 595
Fachbereich Material- und Geowissenschaften
Zentrale Einrichtungen
Hinterlegungsdatum: 05 Feb 2015 08:43
Offizielle URL: http://dx.doi.org/10.1111/jace.13268
Zusätzliche Informationen:

SFB 595 D1

ID-Nummer: 10.1111/jace.13268
Sponsoren: Deutsche Forschungsgemeinschaft (DFG). Grant Number: SFB595 project D1.
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