Abstract
Dielectric properties of 2–2 connectivity lead magnesium niobate-lead titanate (PMN-PT)/Cement composites were investigated at 0.1–20 kHz. PMN-PT of 60–80% by volume was used. The composites were fabricated using a dice and fill technique and cured in 98%RH curing chamber for 7 days before measurements. Dielectric constant (ϵr) at 1 kHz increased with PMN-PT volume, having values of 1504, 1645 and 2390 respectively. Dielectric loss (tanδ) values are 0.382, 0.185 and 0.188 at 1 kHz. In addition, the dielectric constant was found to decrease with an increase in the frequency tested having value of 1692, 1504 and 1322 for 0.1, 1 and 20 kHz respectively. The dielectric loss was found to be less with increasing frequency at 0.702, 0.382 and 0.179 for 0.1, 1 and 20 kHz respectively.
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