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Defect structure and materials “hardening” in Fe2O3-doped [Bi0.5Na0.5]TiO3 ferroelectrics

Aksel, Elena and Erdem, Emre and Jakes, Peter and Jones, Jacob L. and Eichel, Rüdiger-A. (2010):
Defect structure and materials “hardening” in Fe2O3-doped [Bi0.5Na0.5]TiO3 ferroelectrics.
In: Applied Physics Letters, pp. 012903-1, 97, (1), ISSN 00036951, [Online-Edition: http://dx.doi.org/10.1063/1.3455888],
[Article]

Abstract

The effect of Fe2O3-doping on the defect structure and piezoelectric properties of [Bi0.5Na0.5]TiO3 ceramics is studied by means of electron paramagnetic resonance spectroscopy. The results show that the Fe3+ functional centers are incorporated at the perovskite B-site, and clearly can be attributed to the formation of (FeTi′–VO••)• defect complexes with charge compensating oxygen vacancies. Correspondingly, they act as acceptors which promotes materials “hardening.”

Item Type: Article
Erschienen: 2010
Creators: Aksel, Elena and Erdem, Emre and Jakes, Peter and Jones, Jacob L. and Eichel, Rüdiger-A.
Title: Defect structure and materials “hardening” in Fe2O3-doped [Bi0.5Na0.5]TiO3 ferroelectrics
Language: English
Abstract:

The effect of Fe2O3-doping on the defect structure and piezoelectric properties of [Bi0.5Na0.5]TiO3 ceramics is studied by means of electron paramagnetic resonance spectroscopy. The results show that the Fe3+ functional centers are incorporated at the perovskite B-site, and clearly can be attributed to the formation of (FeTi′–VO••)• defect complexes with charge compensating oxygen vacancies. Correspondingly, they act as acceptors which promotes materials “hardening.”

Journal or Publication Title: Applied Physics Letters
Volume: 97
Number: 1
Uncontrolled Keywords: barium compounds, doping, ferroelectric ceramics, hardening, iron compounds, paramagnetic resonance, piezoceramics, sodium compounds, vacancies (crystal)
Divisions: DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B1: EPR-Investigations of defects in ferroelectric ceramic material
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 08 Aug 2011 09:25
Official URL: http://dx.doi.org/10.1063/1.3455888
Additional Information:

SFB 595 B1

Identification Number: doi:10.1063/1.3455888
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