Broadening the operating temperature span of the electrocaloric effect in lead-free ceramics <i>via</i> creating multi-stage phase transitions
Weikang Lin, Guohui Li, Jin Qian, Guanglong Ge, Simin Wang, Jinfeng Lin, Jimin Lin, Bo Shen, Jiwei Zhai
Abstract
The strategy of this study achieves a large electrocaloric response of Δ T > 1 K within a temperature span of 66 °C. The cooling performance exceeds 90% and 80% of the maximum for temperature spans of 44 °C and 67 °C, respectively.
Topics & Concepts
Span (engineering)Electrocaloric effectMaterials scienceCeramicLead (geology)Phase (matter)Stage (stratigraphy)Phase transitionThermodynamicsComposite materialOptoelectronicsStructural engineeringPhysicsEngineeringFerroelectricityGeologyQuantum mechanicsGeomorphologyDielectricPaleontologyFerroelectric and Piezoelectric MaterialsMultiferroics and related materialsMicrowave Dielectric Ceramics Synthesis