Large conventional and inverse electrocaloric effects in PbMg0.5W0.5O3 multilayer capacitors above and below the Néel temperature

• Published in: JPhys Energy Vol. 5; no. 3; pp. 035009 - 35016
• Main Authors: Hirose, Sakyo, Usui, Tomoyasu, Hiroto, Takanobu, Nair, Bhasi, Moya, Xavier, Mathur, Neil D
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.07.2023
• Subjects: antiferroelectric; Antiferroelectricity; Capacitors; Coolers; Dipoles; Electric fields; electrocaloric effects; Ferroelectric materials; multilayer capacitors; Multilayers; Neel temperature; Room temperature; Temperature

Bulk PbMg0.5W0.5O3 (PMW) is an antiferroelectric in which an electric field of 12 V μm−1 is sufficient to initiate a nominally reversible transition to a dipole-aligned (ferroelectric) phase if operating just below the Néel temperature TN, near room temperature (Li et al 2021 Adv. Funct. Mater.31 21...