4. Electric domain and representative hysteresis loop of antiferroelectrics, schematic of a possible mechanism of negative electrocaloric effect in antiferroelectrics[27]
7. Negative electrocaloric effects of PbZrO3, (Pb0.97,La0.02)(Zr0.95,Ti0.05)O3 and B-site nonstoichiometric (Pb0.97,La0.02)(Zr0.95,Ti0.05)1+yO3 (y=-0.03, -0.01, 0.01, 0.03) ceramics under different electric fields
8. Hysteresis loops of PNZST13/2/2 and PNZST43/8/2 under different temperatures, P-T curves, temperature change ΔT and entropy change ΔS of PNZST13/2/2 and PNZST43/8/2[37]
9. Electrocaloric effect of (Pb0.97La0.02)(Zr0.66Sn0.23Ti0.11)O3 single crystal, (Pb0.97La0.02)(Zr0.66Sn0.27Ti0.07)O3 single crystal, (Pb0.97La0.02)(Zr0.80Sn0.14Ti0.06)O3 ceramics, and (Pb0.97La0.02)(ZrxSn0.94-xTi0.06)O3 ceramics