Enhanced room-temperature electrocaloric performance by both multiphase coexistence and diffused phase transition in (Ba<sub>0.65</sub>Sr<sub>0.3</sub>Ca<sub>0.05</sub>)(Sn<sub><i>x</i></sub>Ti<sub>1−<i>x</i></sub>)O<sub>3</sub> ferroelectric ceramics
Mingmei Lin, Zhihong Luo, Haochen Sun, Biao Zhang, Feifei Han, Xiang Niu, Dingyuan Wang, Yisong Bai, Xue Chen, Biaolin Peng, Sheng‐Guo Lu, Laijun Liu
Abstract
Multiphase coexistence and DPT are designed to enhance ECE. A very high Δ T of 1.79 K (indirect) and 2.19 K (direct) and large T span of 26 K (90% Δ T max ) and 45 K (80% Δ T max ) are obtained in the ceramics (Ba 0.65 Sr 0.3 Ca 0.05 )(Sn x Ti 1− x )O 3 for x = 0.02.
Topics & Concepts
Materials sciencePhase transitionElectrocaloric effectPhase (matter)ThermodynamicsTransition temperatureAnalytical Chemistry (journal)Condensed matter physicsChemical physicsChemical engineeringOptoelectronicsDielectricFerroelectricityOrganic chemistrySuperconductivityPhysicsEngineeringChemistryFerroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisMultiferroics and related materials