Short-range order and fractal cluster structure of aggregates of barium titanate microparticles in a composite based on cyano-ethyl ester of polyvinyl alcohol

The distribution of barium titanate (BaTiO$_3$) microparticles in the matrix of cyano-ethyl ester of polyvinyl alcohol and the change in the surface energy upon introduction of shungite carbon nanoclusters into the dielectric composite have been investigated using the methods of scanning electron microscopy and contact angles. The computer processing of the electron microscopy data has demonstrated that the introduction of 0.04% shungite carbon nanoparticles into the composite leads to a decrease in the spatial homogeneity of the quasi-lattice and to an increase in the local density distribution of BaTiO$_3$ microparticles, as well as in the correlation length corresponding to the formation of an infinite cluster of BaTiO$_3$ particles. It has been found that, in this case, the surface energy and dielectric permittivity of the composite extremely increase.