High-frequency electron paramagnetic resonance investigation of the Fe3+ impurity center in polycrystalline PbTiO3 in its ferroelectric phase

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dc.creatorMestric, Hrvoje
dc.creatorEichel, Ruediger-A.
dc.creatorDinse, Klaus-P.
dc.creatorOzarowski, Andrew
dc.creatorvan Tol, Johan
dc.creatorBrunel, Louis Claude
dc.date2004-11-08
dc.date.accessioned2026-07-07T03:01:55Z
dc.date.available2026-07-07T03:01:55Z
dc.descriptionThe intrinsic iron(III) impurity center in polycrystalline lead titanate was investigated by means of high-frequency electron paramagnetic resonance (EPR) spectroscopy in order to determine the local-environment sensitive fine structure parameter D. At a spectrometer frequency of 190 GHz, 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 iron - oxygen vacancy defect associate. A consistent fit of the multi-frequency data necessitated use of a distribution of D values with a variance of about 1 GHz. This statistical distribution of values is probably related to more distant defects and vacancies.
dc.description6 pages, 3 figures, 1 table, to appear in J. App. Phys, 96 (2004)
dc.identifierhttps://arxiv.org/abs/cond-mat/0411167
dc.identifierhttp://arxiv.org/abs/cond-mat/0411167
dc.identifierJ. Appl. Phys. 96, 12 (2004) pp. 7440-7444
dc.identifierdoi:10.1063/1.1808477
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25220
dc.subjectMaterials Science
dc.titleHigh-frequency electron paramagnetic resonance investigation of the Fe3+ impurity center in polycrystalline PbTiO3 in its ferroelectric phase
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