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Ghasemifard M. Investigating of the energy band of core electrons to identify the defects of BaTiO3 nanoelectroceramic doped with different concentrations of Nb element. www.ijcm.ir 2023; 31 (4) :777-784
URL: http://ijcm.ir/article-1-1828-en.html
URL: http://ijcm.ir/article-1-1828-en.html
New modern energy Lab., Esfarayen University of Technology, Esfarayen, Iran
Abstract: (1147 Views)
In this study, the relationship between the defects of BaTiO3 doped by different amounts of pentavalent element Nb was investigated by positron spectroscopy. The reduction of the background spectrum caused by a coincidence detection system in Doppler broadening spectroscopy allows the contribution of high-momentum core electrons in the process of positron annihilation in the BT(1-x)O:Nbx structure (x=0, 0.03, 0.05, 0.07) should be investigated. The results showed that initially by increasing impurity up to 0.05 mol% due to co-substitution of Nb with Ti, the amount of defects, especially open volume defects, is reduced and with further increase in concentration, the amount of vacancy defects increases.
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