“…The PE, FE, AFE, and RFE nature of electro-ceramics are extensively investigated regarding their energy storage density properties and related applications. [1][2][3][4][5][6] Focus is given to those materials with a high stored energy density and energy efficiency because they can be used in various applications, from general (camera flashes, wind turbine generators, high-frequency inverters, and hybrid electric vehicles) and medical (pacemakers, defibrillators, and surgical lasers) to defense (radar and ballistic missiles) applications. [7][8][9] Among PE, FE, and RFE, ceramics with an AFE nature have greater energy storage with moderate efficiency given their special double-type hysteresis.…”