Yao, Fang-Zhou ; Glaum, Julia ; Wang, Ke ; Jo, Wook ; Rödel, Jürgen ; Li, Jing-Feng (2013)
Fatigue-free unipolar strain behavior in CaZrO3 and MnO2 co-modified (K,Na)NbO3-based lead-free piezoceramics.
In: Applied Physics Letters, 103 (19)
doi: 10.1063/1.4829150
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The unipolar fatigue behavior of CaZrO3 and MnO2 co-modified (K,Na,Li)(Nb,Ta)O3 lead-free piezoceramics was investigated systematically. The well-known charge agglomeration model is shown to explain the overall changes observed during unipolar fatigue, such as the development of bias field as well as the anisotropy in bipolar strain hysteresis and field-dependent dielectric permittivity. In addition, it is found that the unipolar strain exhibits only small degradation within 3% at the field amplitude of 2 kV/mm up to 107 cycles. This exceptionally good fatigue resistance is identified due to the presence of additional process, assigned as a “softening” effect that competes against the usual fatigue effect.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2013 |
| Autor(en): | Yao, Fang-Zhou ; Glaum, Julia ; Wang, Ke ; Jo, Wook ; Rödel, Jürgen ; Li, Jing-Feng |
| Art des Eintrags: | Bibliographie |
| Titel: | Fatigue-free unipolar strain behavior in CaZrO3 and MnO2 co-modified (K,Na)NbO3-based lead-free piezoceramics |
| Sprache: | Englisch |
| Publikationsjahr: | November 2013 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| Jahrgang/Volume einer Zeitschrift: | 103 |
| (Heft-)Nummer: | 19 |
| DOI: | 10.1063/1.4829150 |
| Kurzbeschreibung (Abstract): | The unipolar fatigue behavior of CaZrO3 and MnO2 co-modified (K,Na,Li)(Nb,Ta)O3 lead-free piezoceramics was investigated systematically. The well-known charge agglomeration model is shown to explain the overall changes observed during unipolar fatigue, such as the development of bias field as well as the anisotropy in bipolar strain hysteresis and field-dependent dielectric permittivity. In addition, it is found that the unipolar strain exhibits only small degradation within 3% at the field amplitude of 2 kV/mm up to 107 cycles. This exceptionally good fatigue resistance is identified due to the presence of additional process, assigned as a “softening” effect that competes against the usual fatigue effect. |
| Freie Schlagworte: | Ceramics; Materials properties; Material fatigue; Polarization; Permittivity; Piezoelectric transducers; Piezoelectric devices; Electrical hysteresis; Piezoelectricity; Piezoelectric materials |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe |
| Hinterlegungsdatum: | 06 Nov 2013 09:07 |
| Letzte Änderung: | 21 Jan 2019 14:01 |
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