Simultaneously ultra-low dielectric loss and rapid discharge time in Ta2O5 doped niobate-based glass–ceramics

SrO–Na2O–Nb2O5–SiO2 (SNNS) glass–ceramics with Ta2O5 dopants were prepared by a method of conventional melt-quenching and crystallization. The effects of different contents of Ta2O5 dopants on the microstructures, dielectric properties, energy storage densities and discharge properties of SNNS glass–ceramics were exhaustively investigated. Results showed that the doping of Ta5+ cations can significantly improve the dielectric constant of SNNS...