Abstract
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.
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