Morphological transition and evolution of shapes in glassy state; barium strontium titanate dielectric capacitor material

Abstract

Fluorine doped barium strontium titanate dielectric material was studied to determine morphological transition and its effect on dielectric properties. Dielectric is highly dependent on processing methods and shows variation with crystallinity of material, temperature and cooling conditions during processing. To understand some of these problems related to uncertainty and variation of electrical properties, we have prepared nanoparticles-based compounds with addition of fluorine and excess titanium and studied the phase transition. We observed that similar to the solid-liquid interface breakdown, nano-and microparticles show huge transition at the surfaces and transition from particles to nanowires and fibers resulting into self-assembled complex structures. This transition enables possibility of fibers and self-assembled structures for conformal structures for energy storage without decrease in capacitance. © 2019 The American Ceramic Society.