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Abstract
The single-phase perovskite structure of the Ba0.95Pb0.05TiO3+0.1%Co2O3 ceramics was confirmed by the X-ray diffraction method. Microstructural studies revealed that the samples were of good quality and chemically homogeneous. The thermal behaviour of ceramics was studied using the in situ high-temperature X-ray synchrotron powder diffraction investigation. The energy gap of about 3.2 eV was estimated using a reflectance spectroscopy. Measurements showed the influence of Pb and Co on the character of phase transition in the BaTiO3 structure. The results were compared to the ones obtained for pure BaTiO3.
Acknowledgments
Support of A. Reszka (Institute of Physics PAS) in SEM/EDS studies is gratefully acknowledged. Ya. Zhydachevskii and L. Vasylechko acknowledge a support of the Ministry of Education, Science, Youth and Sports of Ukraine (projects DB/Neos) and the ICDD Grant-in-aid program. In situ high-temperature diffraction measurements were carried out during beamtimes allocated to HASYLAB Project I-20110214.