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Title: Effect of particle size on dielectric and ferroelectric properties of 0-3 lead magnesium niobate titanate-portland cement composites
Authors: R. Potong
R. Rianyoi
L. Jareansuk
N. Jaitanong
R. Yimnirun
A. Chaipanich
Keywords: Materials Science
Physics and Astronomy
Issue Date: 1-Dec-2010
Abstract: The effect of lead magnesium niobate titanate (PMNT) particle size on the dielectric and ferroelectric properties of PMNT-Portland cement (PC) composites was investigated. PMNT of various particle sizes (75-425μm) were used at 50% by volume to produce the composites using the mixing and pressing method. Dielectric properties at various frequencies (0.1-20 kHz) and ferroelectrics behavior of the PMNT-Portland cement composites were investigated at room temperature. The results show that the dielectric constant of PMNT- Portland cement composite are found to increase (εr= 154 for particle size 75 μm and εr= 275 for particle size 425 μm (at 1 kHz)), while dielectric loss decreased with increasing particle size of ferroelectric PMNT ceramics. Furthermore, the "instantaneous" remnant polarization (Pir) of composites was found to increase with increasing PMNT particle size.
ISSN: 15635112
Appears in Collections:CMUL: Journal Articles

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