Eichel, Rüdiger-A. ; Meštrić, Hrvoje ; Dinse, Klaus-Peter ; Ozarowski, Andrew ; Van Tol, Johan ; Brunel, Louis Claude ; Kungl, Hans ; Hoffmann, Michael J. (2005):
High-field/high-frequency EPR of paramagnetic functional centers in Cu2+- and Fe3+-modified polycrystalline Pb[ZrxTi1−x]O3 ferroelectrics.
In: Magnetic Resonance in Chemistry, 43 (S1), pp. 166-173. ISSN 0749-1581,
[Article]
Abstract
Copper(II)- and iron(III)-modified Pb[ZrxTi1−x]O3 ferroelectrics were investigated by means of high-field/high-frequency EPR. The results obtained suggest that Cu2+ and Fe3+ both substitute as acceptor centers for [Zr,Ti]4+. Whereas for the iron-doped system the charge compensating oxygen vacancies (Vequation image) lead to the formation of charged (Fe′math imageVequation image)· defect associates, no such associates have been observed for the copper-modified system. As regards the morphotropic phase boundary, the model of a mesoscopic mixing of the pure-member phases has been refined to a picture in which a nanoscale composition distribution prevails.
| Item Type: | Article |
|---|---|
| Erschienen: | 2005 |
| Creators: | Eichel, Rüdiger-A. ; Meštrić, Hrvoje ; Dinse, Klaus-Peter ; Ozarowski, Andrew ; Van Tol, Johan ; Brunel, Louis Claude ; Kungl, Hans ; Hoffmann, Michael J. |
| Title: | High-field/high-frequency EPR of paramagnetic functional centers in Cu2+- and Fe3+-modified polycrystalline Pb[ZrxTi1−x]O3 ferroelectrics |
| Language: | English |
| Abstract: | Copper(II)- and iron(III)-modified Pb[ZrxTi1−x]O3 ferroelectrics were investigated by means of high-field/high-frequency EPR. The results obtained suggest that Cu2+ and Fe3+ both substitute as acceptor centers for [Zr,Ti]4+. Whereas for the iron-doped system the charge compensating oxygen vacancies (Vequation image) lead to the formation of charged (Fe′math imageVequation image)· defect associates, no such associates have been observed for the copper-modified system. As regards the morphotropic phase boundary, the model of a mesoscopic mixing of the pure-member phases has been refined to a picture in which a nanoscale composition distribution prevails. |
| Journal or Publication Title: | Magnetic Resonance in Chemistry |
| Volume of the journal: | 43 |
| Issue Number: | S1 |
| Uncontrolled Keywords: | lead zirconate titanate; PZT; copper-; iron doping; oxygen vacancies; charge compensation; morphotropic phase boundary; high-field/high-frequency EPR; g-anisotropy |
| Divisions: | 07 Department of Chemistry > Physical Chemistry Zentrale Einrichtungen DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue 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 > 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 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 07 Department of Chemistry DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres DFG-Collaborative Research Centres (incl. Transregio) |
| Date Deposited: | 27 Jul 2011 12:53 |
| URL / URN: | http://dx.doi.org/10.1002/mrc.1696 |
| Additional Information: | SFB 595 Cooperation A2, B1 |
| Identification Number: | doi:10.1002/mrc.1696 |
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