Abstract
AgNbO3-based ceramics are promising lead-free anti-ferroelectric (AFE) materials for high power energy application. Herein, enhanced energy storage performance was obtained in BiMnO3 modified AgNbO3 ceramics. It was found that the introduction of BiMnO3 leads to decreased tolerance factor, which is responsible for the enhanced AFE stability. The enhanced AFE stability causes reduced remnant polarization (Pr) and increased AFE-FE phase transition fields (EF/EA), which is beneficial for the energy storage performance. Better recoverable energy storage density (Wrec) of 2.4 J/cm3 at 175 kV/cm was achieved in AgNbO3-0.6 mol% BiMnO3 ceramics, which is due to the enhanced AFE stability.
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