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Aging in the relaxor and ferroelectric state of Fe-doped (1-x)(Bi1/2Na1/2)TiO3-xBaTiO3 piezoelectric ceramics

Sapper, Eva and Dittmer, Robert and Damjanovic, Dragan and Erdem, Emre and Keeble, David J. and Jo, Wook and Granzow, Torsten and Rödel, Jürgen (2014):
Aging in the relaxor and ferroelectric state of Fe-doped (1-x)(Bi1/2Na1/2)TiO3-xBaTiO3 piezoelectric ceramics.
In: Journal of Applied Physics, pp. 104102(1-12), 116, (10), ISSN 0021-8979,
[Online-Edition: http://dx.doi.org/10.1063/1.4894630],
[Article]

Abstract

Aging of piezoelectric properties was investigated in lead-free (1 − x)(Bi1/2Na1/2)TiO3-xBaTiO3 doped with 1at. % Fe. The relaxor character of the un-poled material prevents macroscopic aging effects, while in the field-induced ferroelectric phase aging phenomena are similar to those found in lead zirconate titanate or barium titanate. Most prominent aging effects are the development of an internal bias field and the decrease of switchable polarization. These effects are temperature activated, and can be explained in the framework of defect complex reorientation. This picture is further supported by electron paramagnetic resonance spectra indicating the existence of (FeTi ′−VO ••)• defect complexes in the Fe-doped material.

Item Type: Article
Erschienen: 2014
Creators: Sapper, Eva and Dittmer, Robert and Damjanovic, Dragan and Erdem, Emre and Keeble, David J. and Jo, Wook and Granzow, Torsten and Rödel, Jürgen
Title: Aging in the relaxor and ferroelectric state of Fe-doped (1-x)(Bi1/2Na1/2)TiO3-xBaTiO3 piezoelectric ceramics
Language: English
Abstract:

Aging of piezoelectric properties was investigated in lead-free (1 − x)(Bi1/2Na1/2)TiO3-xBaTiO3 doped with 1at. % Fe. The relaxor character of the un-poled material prevents macroscopic aging effects, while in the field-induced ferroelectric phase aging phenomena are similar to those found in lead zirconate titanate or barium titanate. Most prominent aging effects are the development of an internal bias field and the decrease of switchable polarization. These effects are temperature activated, and can be explained in the framework of defect complex reorientation. This picture is further supported by electron paramagnetic resonance spectra indicating the existence of (FeTi ′−VO ••)• defect complexes in the Fe-doped material.

Journal or Publication Title: Journal of Applied Physics
Volume: 116
Number: 10
Uncontrolled Keywords: Relaxor ferroelectrics, Materials aging, Polarization, Electron paramagnetic resonance spectroscopy, Doping
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A1: Manufacturing of ceramic, textured actuators with high strain
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > D - Component properties > Subproject D1: Mesoscopic and macroscopic fatigue in doped ferroelectric ceramics
11 Department of Materials and Earth Sciences > Material Science
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > D - Component properties
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
11 Department of Materials and Earth Sciences
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 11 Sep 2014 11:01
Official URL: http://dx.doi.org/10.1063/1.4894630
Additional Information:

SFB 595 Cooperation A1, D1

Identification Number: doi:10.1063/1.4894630
Funders: This work was supported by the Deutsche Forschungsgemeinschaft under SFB 595, Project D1
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