Spectroscopic study of Co-doped BaTiO3 thin films

Co-doped BaTiO3 thin films with the perovskite structure were prepared by pyrolysis of metalorganic compounds. According to optical-absorption and luminescence data, the introduction of Co had an insignificant effect on the Curie temperatureTC of the films (about 120δC), presumably because of the co...

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Bibliographic Details
Published in:Inorganic materials 2000-07, Vol.36 (7), p.726-728
Main Authors: Myasnikova, T. P., Gakh, S. G., Zakharchenko, I. N.
Format: Article
Language:English
Subjects:
Absorption spectra
Barium titanates
Compressive properties
Infrared spectra
Near infrared radiation
Organometallic compounds
Perovskite structure
Perovskites
Pyrolysis
Thermal expansion
Thin films
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Summary:Co-doped BaTiO3 thin films with the perovskite structure were prepared by pyrolysis of metalorganic compounds. According to optical-absorption and luminescence data, the introduction of Co had an insignificant effect on the Curie temperatureTC of the films (about 120δC), presumably because of the competitive effects of the Co dopant, reducingTC, and the large compressive strain due to the thermal expansion mismatch, raisingTC. An absorption band tentatively attributed to a small-radius polaron was observed in the near-infrared spectral region.
ISSN:0020-1685
1608-3172
DOI:10.1007/BF02758430