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Characterization of (Fe<sub>Zr,Ti</sub>-V<sub>o</sub> <sup>ldrldr</sup>)<sup>ldr</sup> defect dipoles in (La,Fe)-codoped PZT 52.5/47.5 piezoelectric ceramics by multifrequency electron paramagnetic resonance spectroscopy

Erdem, Emre and Eichel, Rüdiger-A. and Kungl, Hans and Hoffmann, Michael J. and Ozarowski, Andrew and van Tol, Johan and Brunei, L. C. (2008):
Characterization of (Fe<sub>Zr,Ti</sub>-V<sub>o</sub> <sup>ldrldr</sup>)<sup>ldr</sup> defect dipoles in (La,Fe)-codoped PZT 52.5/47.5 piezoelectric ceramics by multifrequency electron paramagnetic resonance spectroscopy.
In: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, pp. 1061-1068, 55, (5), ISSN 0885-3010,
[Online-Edition: http://dx.doi.org/10.1109/TUFFC.2008.757],
[Article]

Abstract

Ferroelectric 1 mol.% La3+ and 0.5 mol.% Fe3+ codoped Pb[Zr0.54Ti0.46]O3 ceramics were studied by means of multifrequency electron paramagnetic resonance (EPR) spectroscopy. The obtained results prove that iron is incorporated at the [Zr,Ti]-site, acting as an acceptor and building a charged (FeZr,Ti - Vo ldrldr)ldr defect dipole with a directly coordinated oxygen vacancy for partial charge compensation. This feature of the defect associates has hitherto been identified only in hard, exclusively Fe3+ -doped PZT compounds. The present results show, however, that a similar defect association of the Fe3+ functional center with a Vo ldrldr also exists in soft, donor-acceptor (La3+,Fe3+)-codoped PZT. According to models developed by Arlt et al. electric dipoles from defect associates, such as the (FeZr,Ti - Vo ldrldr)ldr defect associate, which may give rise to an internal bias field that is discussed being responsible for ferroelectric aging.

Item Type: Article
Erschienen: 2008
Creators: Erdem, Emre and Eichel, Rüdiger-A. and Kungl, Hans and Hoffmann, Michael J. and Ozarowski, Andrew and van Tol, Johan and Brunei, L. C.
Title: Characterization of (Fe<sub>Zr,Ti</sub>-V<sub>o</sub> <sup>ldrldr</sup>)<sup>ldr</sup> defect dipoles in (La,Fe)-codoped PZT 52.5/47.5 piezoelectric ceramics by multifrequency electron paramagnetic resonance spectroscopy
Language: English
Abstract:

Ferroelectric 1 mol.% La3+ and 0.5 mol.% Fe3+ codoped Pb[Zr0.54Ti0.46]O3 ceramics were studied by means of multifrequency electron paramagnetic resonance (EPR) spectroscopy. The obtained results prove that iron is incorporated at the [Zr,Ti]-site, acting as an acceptor and building a charged (FeZr,Ti - Vo ldrldr)ldr defect dipole with a directly coordinated oxygen vacancy for partial charge compensation. This feature of the defect associates has hitherto been identified only in hard, exclusively Fe3+ -doped PZT compounds. The present results show, however, that a similar defect association of the Fe3+ functional center with a Vo ldrldr also exists in soft, donor-acceptor (La3+,Fe3+)-codoped PZT. According to models developed by Arlt et al. electric dipoles from defect associates, such as the (FeZr,Ti - Vo ldrldr)ldr defect associate, which may give rise to an internal bias field that is discussed being responsible for ferroelectric aging.

Journal or Publication Title: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Volume: 55
Number: 5
Divisions: DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A2: Manufacturing and characterization of PZT-ceramics with defined defect chemistry
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 > A - Synthesis
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: 27 Jul 2011 11:14
Official URL: http://dx.doi.org/10.1109/TUFFC.2008.757
Additional Information:

SFB 595 Cooperation A2, B1

Identification Number: doi:10.1109/TUFFC.2008.757
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