Tunable dielectric characteristics of (Ba0.95Ca0.05)(Ti1−ySny)O3 ferroelectric ceramics

In order to explore potential candidates for field tunable dielectric materials, the present work was focused on investigating the microstructure, dielectric and tunable dielectric properties of A- and B-site substituted barium titanate ceramics. Large tunability with lower dielectric loss was obtained in the present ceramics at a quite weak bias field. The excellent tunable characteristics were achieved for y = 0.15 at room temperature (25 °C): tunability = 26%, tanδ < 0.01 at 10 kHz under a very weak bias DC electric field of 2.1 kV/cm.