Shallow traps in pure KTaO.sub.3./sub. crystals

0134062 - FZU-D 20020350 RIV GB eng J - Journal Article
Laguta, V. V. - Glinchuk, M. D. - Bykov, I. P. - Cremona, A. - Galinetto, P. - Jastrabík, Lubomír - Rosa, Jan
Shallow traps in pure KTaO₃ crystals.
Radiation Effects and Defects in Solids. Roč. 157, - (2002), s. 721-727. ISSN 1042-0150. E-ISSN 1029-4953
R&D Projects: GA MŠMT LN00A015
Institutional research plan: CEZ:AV0Z1010914
Keywords : ferroelectric * point defects * ESR
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 0.290, year: 2002

We made TSL TL and ESR measurements on single crystals of potassium tantalate in the temperature range 4.2-290K.We revealed two sorts of O - shallow hole centers which are responsible for photoconductivity and photoluminescence enhanmcement. Experimental data were treated in a simple one-trap/one-recombination center model, which takes into account the presence of "thermally disconnected" deep electron traps.
Permanent Link: http://hdl.handle.net/11104/0032000