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Defect structure and formation of defect complexes in Cu2+-modified metal oxides derived from a spin-Hamiltonian parameter analysis

Eichel, Rüdiger-A. and Drahus, Michael D. and Jakes, Peter and Erünal, Ebru and Erdem, Emre and Parashar, Sandeep Kumar and Kungl, Hans and Hoffmann, Michael J. (2009):
Defect structure and formation of defect complexes in Cu2+-modified metal oxides derived from a spin-Hamiltonian parameter analysis.
In: Molecular Physics, p. 1981, 107, (19), ISSN 0026-8976,
[Online-Edition: http://dx.doi.org/10.1080/00268970903084920],
[Article]

Abstract

The nearest neighbour oxygen octahedron about copper functional centres in metal oxides has been systematically studied by means of electron paramagnetic resonance (EPR) spectroscopy. In particular, the determined g||zz and ACu||zz spin-Hamiltonian parameters were analysed, finding linear dependences as a function of chemical bonding and local distortion of the oxygen octahedron. Moreover, through the introduction of a dimensionless coordination parameter ξ, different defect structures with respect to the number of coordinated oxygen vacancies may be distinguished. This allows for a distinct assignment of defect complexes between the copper functional centre with one or two oxygen vacancies.

Item Type: Article
Erschienen: 2009
Creators: Eichel, Rüdiger-A. and Drahus, Michael D. and Jakes, Peter and Erünal, Ebru and Erdem, Emre and Parashar, Sandeep Kumar and Kungl, Hans and Hoffmann, Michael J.
Title: Defect structure and formation of defect complexes in Cu2+-modified metal oxides derived from a spin-Hamiltonian parameter analysis
Language: English
Abstract:

The nearest neighbour oxygen octahedron about copper functional centres in metal oxides has been systematically studied by means of electron paramagnetic resonance (EPR) spectroscopy. In particular, the determined g||zz and ACu||zz spin-Hamiltonian parameters were analysed, finding linear dependences as a function of chemical bonding and local distortion of the oxygen octahedron. Moreover, through the introduction of a dimensionless coordination parameter ξ, different defect structures with respect to the number of coordinated oxygen vacancies may be distinguished. This allows for a distinct assignment of defect complexes between the copper functional centre with one or two oxygen vacancies.

Journal or Publication Title: Molecular Physics
Volume: 107
Number: 19
Uncontrolled Keywords: ferroelectrics, defect structure, copper doping, oxygen vacancy, defect dipole
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: 21 Jul 2011 08:54
Official URL: http://dx.doi.org/10.1080/00268970903084920
Additional Information:

SFB 595 Cooperation A2, B1

Identification Number: doi:10.1080/00268970903084920
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