Dielectric dispersion and impedance spectroscopy of B3+-doped Ba(Ti0.9Sn0.1)O3 ceramics

• Main Authors: Tawichai,N., Sutjarittangtham,K., Tunkasiri,T., Pengpat,K., Rujijanagul,G., Wang,J.
• Format: Conference or Workshop Item
• Published: Elsevier Limited 2015
• Subjects: Surfaces, Coatings and Films; Materials Chemistry; Electronic, Optical and Magnetic Materials; Ceramics and Composites; Process Chemistry and Technology
• Online Access: http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84875704658&origin=inward; http://cmuir.cmu.ac.th/handle/6653943832/38690
• Institution: Chiang Mai University

In this study, the B2O3 doped Ba(Ti 0.9Sn0.1)O3 ceramics were prepared by using a solid state reaction method. Wide ranges of frequency (0.1 Hz to 1 MHz) and temperature (20-280 °C) dependence of the impedance relaxation were investigated. The impedance study indicates the presence of both dielectric relaxation in bulk and grain boundary effects in the material. The relaxation times for grain and grain boundary estimated from Cole-Cole plots varied with temperature according to the Arrhenius relation. The activation energy for grain and grain boundary were estimated to be 0.73 and 0.85 eV, respectively. © 2012 Elsevier Ltd and Techna Group S.r.l.