Aging of the ferroelectric hysteresis in Ce-doped Strontium-Barium-Niobate observed by holographic phase gratings |
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| Authors: | U.?D?rfler,T.?Granzow,Th.?Woike,M.?W?hlecke,R.?Pankrath,M.?Imlau mailto:mimlau@uos.de" title=" mimlau@uos.de" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author |
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| Affiliation: | (1) Institut für Mineralogie und Geochemie, Universität zu Köln, Zülpicherstr. 49b, 50674 Köln, Germany;(2) Fachbereich Physik, Universität Osnabrück, Barbarastr. 7, 49069 Osnabrück, Germany |
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| Abstract: | ![]()
The ferroelectric hysteresis of Strontium-Barium-Niobate single crystals doped with Ce (SBN:Ce) is measured by a holographic method. The hysteresis loop flattens out when measured repeatedly. The size of this aging effect strongly depends on the modulation depth m of the light intensity pattern: for m=1 the aging is less pronounced than for smaller m. This behavior is explained in the context of the model of frozen internal charges for the ferroelectric relaxor SBN. PACS 42.40.Pz; 77.80.Dj; 77.84.Dy |
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