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Acoustic emission study of domain wall motion and phase transition in (1−x−y)Bi0.5Na0.5TiO3–xBaTiO3–yK0.5Na0.5NbO3 lead-free piezoceramics

Dul'kin, E. and Mojaev, E. and Roth, M. and Jo, Wook and Granzow, Torsten (2009):
Acoustic emission study of domain wall motion and phase transition in (1−x−y)Bi0.5Na0.5TiO3–xBaTiO3–yK0.5Na0.5NbO3 lead-free piezoceramics.
In: Scripta Materialia, pp. 251-253, 60, (4), ISSN 13596462, [Online-Edition: http://dx.doi.org/10.1016/j.scriptamat.2008.10.014],
[Article]

Abstract

The ferroelectric strain hysteresis and acoustic emissions of lead-free (1 − x − y)Bi0.5Na0.5TiO3–xBaTiO3–yK0.5Na0.5NbO3 ceramics were investigated at room temperature. The field-induced antiferroelectric ↔ ferroelectric phase transition as well as the ferroelectric coercive field were successfully detected. Although the strain was largest for x = 0.06 and y = 0.02, this composition showed the lowest acoustic emission signals, making it an interesting material for ultrasonic transducer applications.

Item Type: Article
Erschienen: 2009
Creators: Dul'kin, E. and Mojaev, E. and Roth, M. and Jo, Wook and Granzow, Torsten
Title: Acoustic emission study of domain wall motion and phase transition in (1−x−y)Bi0.5Na0.5TiO3–xBaTiO3–yK0.5Na0.5NbO3 lead-free piezoceramics
Language: English
Abstract:

The ferroelectric strain hysteresis and acoustic emissions of lead-free (1 − x − y)Bi0.5Na0.5TiO3–xBaTiO3–yK0.5Na0.5NbO3 ceramics were investigated at room temperature. The field-induced antiferroelectric ↔ ferroelectric phase transition as well as the ferroelectric coercive field were successfully detected. Although the strain was largest for x = 0.06 and y = 0.02, this composition showed the lowest acoustic emission signals, making it an interesting material for ultrasonic transducer applications.

Journal or Publication Title: Scripta Materialia
Volume: 60
Number: 4
Uncontrolled Keywords: Lead-free piezoelectrics; Acoustic emission; Antiferroelectric phase transition; Ferroelectric hysteresis
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 18 May 2011 15:20
Official URL: http://dx.doi.org/10.1016/j.scriptamat.2008.10.014
Identification Number: doi:10.1016/j.scriptamat.2008.10.014
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