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: Conference or Workshop Item
• Published: Elsevier Limited 2015
• Subjects: Surfaces, Coatings and Films; Materials Chemistry; Electronic, Optical and Magnetic Materials; Ceramics and Composites; Process Chemistry and Technology
• Online Access: http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84655162150&origin=inward; http://cmuir.cmu.ac.th/handle/6653943832/38608
• 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 (ε 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 (P ir) at 50 Hz and at the electric field of 7 kV/cm of the PMN-PT/PC composite was found to be ≈10 μC/cm 2. 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.