Abstract
Pb0.94−xLa0.04Srx[(Zr0.6Sn0.4)0.84Ti0.16]O3 (x=0,0.02,0.04,0.06) antiferroelectric ceramics were fabricated via conventional solid-state reaction. The increase of Sr content enhanced the stability of antiferroelectric phase, which resulted in the rise of phase transition fields and energy density. When x=0.06, the releasable energy density was 1.52J/cm3 and the efficiency was 93.3% under 129kV/cm. The pulsed discharge current was also measured to evaluate the energy release properties. Under 129kV/cm, the obtained current density could be as high as 165.5A/cm2. The pulsed discharge energy density was 1.21J/cm3 and 90% of that could be released in less than 200ns. The high energy density, high efficiency and fast energy release time indicate that the obtained AFE ceramics are very promising for pulsed power capacitors.
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