Dielectric and ferroelectric hysteresis properties of 1-3 lead magnesium niobate-lead titanate ceramic/Portland cement composites

• Main Authors: Chaipanich A., Potong R., Rianyoi R., Jareansuk L., Jaitanong N., Yimnirun R.
• Format: Article
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-80955175636&partnerID=40&md5=ec07ae06e03d51e7e90c2a8b9d047f3d; http://cmuir.cmu.ac.th/handle/6653943832/6026
• Institution: Chiang Mai University

In this work, lead magnesium niobate-lead titanate (PMN-PT) ceramic was cut and filled with Portland cement (PC) to produce 1-3 connectivity PMN-PT/PC composites. Dielectric and ferroelectric hysteresis properties of these composites with PMN-PT ceramic volume content of 60% were investigated. Room temperature dielectric constant (e{open}r ) at 1 kHz of the PMN-PT/PC composite was found to be ≈1500. At higher frequency (20 kHz), the dielectric constant was reduced to the value of ≈1300. Ferroelectric (polarization-electric field) hysteresis loops at 10-90 Hz and varying electric field were measured. The "instantaneous" remnant polarization (Pir ) at 50 Hz and at the electric field of 7 kV/cm of the PMN-PT/PC composite was found to be ≈10 μC/cm2. These values of 1-3 composites therefore are promising when compared to previous results of composites at similar conditions. © 2011 Elsevier Ltd and Techna Group S.r.l.