Phase transition and linear thermal expansion of (Pb1-xBax)ZrO3 ceramics

• Main Authors: G. Rujijanagul, T. Bongkarn
• Format: Journal
• Published: 2018
• Subjects: Materials Science; Physics and Astronomy
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=34248547944&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/61204
• Institution: Chiang Mai University

(Pb1-xBax)ZrO3 ceramics for the composition range 0 x 0.30 were prepared by the mixed oxide solid state reaction method. Phase transition was studied by dielectric and dilatometric measurements. The ferroelectric to paraelectric phase transition temperature was progressively shifted to a lower temperature by replacing lead with barium. The x = 0.20 sample showed the maximum dielectric constant of 16,300 at the transition temperature. For compositions 0 x 0.075, the antiferroelectric to ferroelectric phase transition exhibited a large linear thermal expansion. However, the antiferroelectric to ferroelectric phase transition did not exist for 0.10 x 0.30 samples. A phase diagram for PBZ ceramics prepared by the conventional mixed oxide method was also present.