LIGHT-INDUCED CHARGE TRANSPORT IN TETRAGONAL KTa1-xNbxO3:Fe CRYSTALS

Autor(en): Loheide, S.
Kraetzig, E.
Stichwörter: Materials Science; Materials Science, Multidisciplinary; Physics; Physics, Condensed Matter
Erscheinungsdatum: 1996
Herausgeber: TAYLOR & FRANCIS LTD
Journal: FERROELECTRICS
Volumen: 185
Startseite: 293
Seitenende: 296
Zusammenfassung: 
The light-induced charge transport in tetragonal KTa1-xNbxO3 crystals with different Fe concentrations is investigated. The experimental results of holographic measurements for intensities up to 1 kW/m(2) can be well described by a model which assumes one kind of photorefractive centers with both, electron-hole competition and space charge field limitations due to the available trap density. The results at high intensities lead to the assumption of additional shallow traps.
ISSN: 00150193
DOI: 10.1080/00150199608210536

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