Abstract
ABSTRACT The study provides experimental results for clarifying the influence of a conductive filler of multiwalled carbon nanotubes (MWCNT) and a dielectric inclusion of nanodispersed silica (nSiO2) on dielectric properties of a classical ferroelectric of KH2PO4 (KDP) in composites containing these substances. Wits increasing nSiO2 content, the phase transition point of KDP was shifted toward higher temperatures along with a decrease in dielectric permittivity. Meanwhile, MWCNT composition did not affect phase transition, but enhanced dielectric permittivity that reached highest values at MWCNT:nSiO2:KDP mass ratio of 0.096:1:1. The thrshod of MWCNT in the composite was also determined. The conductive nature of MWCNT and the interaction between nSiO2 with KDP in the presence of residual water was figured out as the main reason for these anomalies.
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