نوع مقاله : مقاله پژوهشی
نویسنده
آزمایشگاه فناوری نانو، مجتمع آموزش عالی اسفراین، اسفراین، خراسان شمالی، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
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.
کلیدواژهها [English]