Characterization of 0.93Pb(Zn 1/3Nb 2/3)O 3-0.07BaTiO 3 ceramics derived from a novel Zn 3Nb 2O 8 B-site precursor

• Main Authors: Pakawanit P., Ngamjarurojana A., Prasatkhetragarn A., Ananta S.
• Format: Article
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-84868253309&partnerID=40&md5=8c581b1c03da51374c09d5f762745681; http://cmuir.cmu.ac.th/handle/6653943832/6958
• Institution: Chiang Mai University

In this work, perovskite relaxor ferroelectric lead zinc niobate-barium titanate (0.93PZN-0.07BT) ceramics were fabricated by using a combination of Zn 3Nb 2O 8 B-site precursor and reactive sintering process. The effects of sintering condition on phase formation, densification, microstructure and dielectric properties of the final products have been investigated using a combination of X-ray diffraction, Archimedes density measurement, scanning electron microscopy and dielectric measurement techniques. It is seen that pure perovskite phase of PZN-BT solid solutions can be achieved in all samples. Density and average grain size values of sintered samples increased with sintering temperatures and dwell time. With appropriate sintering at 1150 °C for 5 h, 0.93PZN-0.07BT ceramics exhibited a peak dielectric constant of 11,497 and dielectric loss of 0.05 at the Curie temperature of 99 °C measured at 1 kHz. © 2012 Elsevier Ltd and Techna Group S.r.l.