Effects of heat treatment on structural evolution and morphology of BaTi5O11 powder synthesized by the sol-gel method

• Main Authors: Tangjuank S., Tunkasiri T.
• Format: Article
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-2042478031&partnerID=40&md5=683661cae15ee04f189f0213f802def3; http://cmuir.cmu.ac.th/handle/6653943832/7134
• Institution: Chiang Mai University

BaTi5O11 powder was successfully prepared and characterized by the sol-gel method. The mechanisms of BaTi5O 11 formation were studied by the fourier transform infrared spectroscopy (FTIR). The IR absorption peaks confirm the existence of a substitution reaction with the chelating reagent corresponding to different modes of vibration characteristic of the acetate group. The X-ray diffraction (XRD) results showed that the formation of single-phase monoclinic BaTi 5O11 began at 700 °C and were stable up to 1100 °C in air. The particle sizes observed from scanning electron microscopy (SEM) are about 100nm for a calcination temperature at 700 °C and 600nm at 1100 °C. © 2003 Elsevier B.V. All rights reserved.