Giant electrocaloric effect in 0.75PbZrO3 - 0.25Bi(Mg1/2Ti1/2)O3 ceramics. Issue 11 (1st August 2019)

• Record Type: Journal Article
• Authors: Jamwal, Tanya; Kumar, Raju; Singh, Satyendra
• Is Part Of: Ceramics international. Volume 45:Issue 11(2019)
• Page Start: 14411
• Page End: 14414
• Publication Date: 2019-08-01
• Subjects: Electrocaloric effect -- Ferroelectrics -- Solid-state refrigeration -- PbZrO3; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.04.159
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Antiferroelectric (AFE)/ferroelectric (FE) materials with large electrocaloric effect (ECE) in a broad operating temperature range are potential candidates for next generation solid-state refrigeration applications due to its environmentally-friendly and high efficiency. In this work, we have experimentally investigated the electrocaloric response in 0.75PbZrO3 -0.25Bi(Mg1/2 Ti1/2 )O3 in ceramics by prepared by a standard solid-state reaction method. Ferroelectric P-E hysteresis loops were measured over a broad range of temperature/electric field and the ECE was calculated by the indirect thermodynamic method. The maximum value of ECE ( Δ T) and the electrocaloric responsivity ( Δ T/ Δ E) were found to be 0.96K and 2.43 × 10 −7 K.mV −1, respectively, at an operating temperature of 366 K under the external electric field of 40kV/cm. The observed ECE response has the great potential for their uses in solid state cooling technology applications.