Structure of paramagnetic defects in BaTiO3 and their light induced charge conversion |
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| Authors: | E. Possenriede H. Kröse O. F. Schirmer G. Godefroy |
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| Affiliation: | 1. Fachbereich Physik , Univ. Osnabrück , D-4500, Osnabrück;2. Lab. de Physique du Solide , Université de Bourgogne , F-21004, Dijon, Cedex |
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| Abstract: | ![]()
Abstract We report the ESR of Nd3+ in BaTiO3 and derive the electronic structure of its groundstate. – Among the light induced charge conversions found with ESR in nominally undoped BaTiO3 crystals hole photoionization of Fe4+ is the most important. The process is increased by oxidizing the crystals. Some of the holes are trapped as O? next to an unidentified acceptor. The trapping site of the remaining holes is ESR-silent. |
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