Effects of process parameter and excess Bi<inf>2</inf>O<inf>3</inf>on phase formation and electrical properties of BiFeO<inf>3</inf>ceramics

• Main Authors: Kachaporn Sanjoom, Gobwute Rujijanagul
• Format: Journal
• Published: 2018
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84891750584&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/48246
• Institution: Chiang Mai University

The BiFeO 3 was prepared by a mixed oxide, solid-state reaction method. Excess Bi 2 O 3 (1-7wt%) was introduced prior to powder calcination to compensate for any Bi 2 O 3 that may have been lost from the samples due to volatilization during heat treatments. Various heating rates (1-10°C/min) were performed at the calcination state. X-ray diffraction analysis revealed that pure phase BFO was observed for the samples calcined at a low heating rate (1°C/min) and contained lower amount of Bi 2 O 3 .The higher levels of excess Bi 2 O 3 produced an increased in dielectric constant and dielectric loss. Further, ferroelectric behavior was improved for higher amount Bi 2 O 3 contented samples. © 2013 Copyright Taylor and Francis Group, LLC.