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High-frequency electron paramagnetic resonance investigation of the Fe[sup 3+] impurity center in polycrystalline PbTiO[sub 3] in its ferroelectric phase

Meštrić, Hrvoje and Eichel, Rüdiger-A. and Dinse, Klaus-Peter and Ozarowski, Andrew and van Tol, Johan and Brunel, Louis Claude (2004):
High-frequency electron paramagnetic resonance investigation of the Fe[sup 3+] impurity center in polycrystalline PbTiO[sub 3] in its ferroelectric phase.
In: Journal of Applied Physics, pp. 7440-1, 96, (12), ISSN 00218979, [Online-Edition: http://dx.doi.org/10.1063/1.1808477],
[Article]

Abstract

The intrinsic iron(III) impurity center in polycrystalline lead titanate was investigated by means of high-frequency electron paramagnetic resonance spectroscopy in order to determine the local-environment sensitive fine-structure parameter D. At a spectrometer frequency of 190 GHz, a spectral analysis of a powder sample was unambiguously possible. The observed mean value D=+35.28 GHz can be rationalized if Fe3+ ions substitute for Ti4+ at the B site of the perovskite ABO3 lattice forming a directly coordinated FeTi′–VO⋅⋅ defect associate. A consistent fit of the multifrequency data necessitated the use of a distribution of the D values with a variance of about 1 GHz. This statistical distribution of values is probably related to more distant defects and vacancies.

Item Type: Article
Erschienen: 2004
Creators: Meštrić, Hrvoje and Eichel, Rüdiger-A. and Dinse, Klaus-Peter and Ozarowski, Andrew and van Tol, Johan and Brunel, Louis Claude
Title: High-frequency electron paramagnetic resonance investigation of the Fe[sup 3+] impurity center in polycrystalline PbTiO[sub 3] in its ferroelectric phase
Language: English
Abstract:

The intrinsic iron(III) impurity center in polycrystalline lead titanate was investigated by means of high-frequency electron paramagnetic resonance spectroscopy in order to determine the local-environment sensitive fine-structure parameter D. At a spectrometer frequency of 190 GHz, a spectral analysis of a powder sample was unambiguously possible. The observed mean value D=+35.28 GHz can be rationalized if Fe3+ ions substitute for Ti4+ at the B site of the perovskite ABO3 lattice forming a directly coordinated FeTi′–VO⋅⋅ defect associate. A consistent fit of the multifrequency data necessitated the use of a distribution of the D values with a variance of about 1 GHz. This statistical distribution of values is probably related to more distant defects and vacancies.

Journal or Publication Title: Journal of Applied Physics
Volume: 96
Number: 12
Uncontrolled Keywords: lead compounds, iron, powders, ferroelectric ceramics, EPR spectroscopy, vacancies (crystal), statistical distributions, spectral analysis
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 14:19
Official URL: http://dx.doi.org/10.1063/1.1808477
Additional Information:

SFB 595 B1

Identification Number: doi:10.1063/1.1808477
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