Dielectric and ferroelectric hysteresis properties of 1-3 lead magnesium niobate-lead titanate ceramic/Portland cement composites
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...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
2014
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| 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 |
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| Institution: | Chiang Mai University |
| Language: | English |
| Summary: | 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. |
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