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Título: | Origin of large negative electrocaloric effect in antiferroelectric PbZrO3 |
Autor: | Vales-Castro, Pablo CSIC ORCID; Faye, Romain; Vellvehí Hernández, Miquel; Nouchokgwe, Youri; Perpiñá, Xavier; Caicedo, José Manuel CSIC ORCID; Jordà, Xavier; Roleder, Krystian; Kajewski, Dariusz; Pérez-Tomás, Amador CSIC ORCID; Defay, Emmanuel; Catalán, Gustau CSIC ORCID | Fecha de publicación: | 2021 | Editor: | American Physical Society | Citación: | Physical Review B 103(5): 054112 (2021) | Resumen: | We have studied the electrocaloric response of the archetypal antiferroelectric PbZrO3 as a function of voltage and temperature in the vicinity of its antiferroelectric-paraelectric phase transition. Large electrocaloric effects of opposite signs, ranging from an electrocooling of −3.5 K to an electroheating of +5.5K, were directly measured with an infrared camera. We show by calorimetric and electromechanical measurements that the large negative electrocaloric effect comes from an endothermic antiferroelectric-ferroelectric switching, in contrast to dipole destabilization of the antiparallel lattice, previously proposed as an explanation for the negative electrocaloric effect of antiferroelectrics. | Versión del editor: | https://doi.org/10.1103/PhysRevB.103.054112 | URI: | http://hdl.handle.net/10261/253016 | DOI: | 10.1103/PhysRevB.103.054112 | E-ISSN: | 2469-9969 |
Aparece en las colecciones: | (CIN2) Artículos (IMB-CNM) Artículos |
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