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Formation of (Ti'Ti − V••O)• defect dipoles in BaTiO3 ceramics heat-treated under reduce oxygen partial-pressure

Erdem, Emre and Jakes, Peter and Eichel, Rüdiger-A. and Sinclair, Derek C. and Pasha, Mahaboob and Reaney, Ian M. (2010):
Formation of (Ti'Ti − V••O)• defect dipoles in BaTiO3 ceramics heat-treated under reduce oxygen partial-pressure.
In: Functional Materials Letters, pp. 65-68, 03, (01), ISSN 1793-6047, [Online-Edition: http://dx.doi.org/10.1142/S1793604710000956],
[Article]

Abstract

The defect structure of barium titanate (BaTiO3) heat-treated under reduced pO2 has been investigated by electron paramagnetic resonance (EPR) spectroscopy. The results confirm the formation of Ti'Ti-centers. Based on the relative size of the principal values of the electron g-matrix, g⊥ > g‖, the local distortion of the oxygen octahedron about the Ti'Ti-centers was also analyzed and the formation of (Ti'Ti-V0°°)° defect associates unambiguously established.

Item Type: Article
Erschienen: 2010
Creators: Erdem, Emre and Jakes, Peter and Eichel, Rüdiger-A. and Sinclair, Derek C. and Pasha, Mahaboob and Reaney, Ian M.
Title: Formation of (Ti'Ti − V••O)• defect dipoles in BaTiO3 ceramics heat-treated under reduce oxygen partial-pressure
Language: English
Abstract:

The defect structure of barium titanate (BaTiO3) heat-treated under reduced pO2 has been investigated by electron paramagnetic resonance (EPR) spectroscopy. The results confirm the formation of Ti'Ti-centers. Based on the relative size of the principal values of the electron g-matrix, g⊥ > g‖, the local distortion of the oxygen octahedron about the Ti'Ti-centers was also analyzed and the formation of (Ti'Ti-V0°°)° defect associates unambiguously established.

Journal or Publication Title: Functional Materials Letters
Volume: 03
Number: 01
Uncontrolled Keywords: Barium titanate (BaTio3); defect structure; oxygen vacancies; defect dipoles
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 09:32
Official URL: http://dx.doi.org/10.1142/S1793604710000956
Additional Information:

SFB 595 B1

Identification Number: doi:10.1142/S1793604710000956
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