Dielectric properties of the sintered nano- and micro-sized fresnoite without/with strontium titanate phase
Journal of Materials Science: Materials in Electronics(2015)
摘要
Within the BaO–SrO–TiO 2 –SiO 2 system, fresnoite (Ba 2 TiSi 2 O 8 ) was prepared as a major phase using conventional sintering routes through solid-state reaction. Strontium titanate (SrTiO 3 ) phase was observed at the highest strontium oxide containing sample. The microstructure shows rounded to sub-rounded clusters of nano-fresnoite crystals in free- and low-SrO-containing samples, whereas, microscale of clear cubic and tetragonal crystals of both phases with some acicular strontium titanate were developed in-between. The value of dielectric constant was 6.48 for SrO-free sample, however, incorporation of SrO and its increase in the samples increases the dielectric constant to 120.39 (at 1 kHz and room temperature) in the sample containing the highest value of SrTiO 3 phase. Accordingly the studied Sr-containing fresnoite composite materials can be considered as candidates for application in electronic devices for energy storage.
更多查看译文
关键词
Dielectric Constant, Strontium Titanate, Molecular Dipole, Barium Carbonate, Strontium Carbonate
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络