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The electrocaloric effect of 9/65/35 PLZT thin film fabricated by the sol-gel method, which has not been studied yet, was investigatedfor its structural, electrical properties as well as temperature change property. The relaxor ferroelectric property of 9/65/35 PLZT thinfilm was confirmed by examining its dielectric and electrical properties. The relaxor property can cause a more pronounced elec-trocaloric effect (ECE) in a wider temperature range than normal ferroelectric film. To avoid errors caused by using an indirect mea-surement method, the leakage current generated by increasing temperatures was minimized by using the optimal maximum electric field(350 kVcm -1 ) in the thin film. The largest temperature change ΔT (0.23 K) and the electrocaloric strength ξ (0.68 mkcm/kV), calculatedby equations were obtained. The maximum field change ΔE (191 kVcm -1 ) was in the vicinity of the curie temperature (200 o C).Keywords: Electrocaloric effect, Cooling device, PLZT, Ferroelectric material

Electrocaloric Effect in Pb0.865La0.09(Zr0.65Ti0.35)O3Thin Film

Electrocaloric Effect in Pb_0.865La_0.09(Zr_0.65Ti_0.35)O₃Thin Film