title: Giant room-temperature elastocaloric effect in ferroelectric ultrathin films.
abstract: Environmentally friendly ultrathin BaTiO3 capacitors can exhibit a giant stress-induced elastocaloric effect without hysteresis loss or Joule heating. By combining this novel elastocaloric effect with the intrinsic electrocaloric effect, an ideal refrigeration cycle with high performance (temperature change over 10 K with a wide working-temperature window of 60 K) at room temperature is proposed for future cooling applications.
authors.affiliation: Laboratoire Structures, Propriétés et Modélisation des Solides, UMR CNRS 8580, Ecole Centrale Paris, 92295, Châtenay-Malabry, France; Multi-disciplinary Materials Research Center, Frontier Institute of Science and Technology and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, PR China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Ingrid C
authors.initials: IC
authors.lastname: Infante
authors.forename: Xiaojie
authors.initials: X
authors.lastname: Lou
authors.forename: Laurent
authors.initials: L
authors.lastname: Bellaiche
authors.forename: James F
authors.initials: JF
authors.lastname: Scott
authors.forename: Brahim
authors.initials: B
authors.lastname: Dkhil
keywords: elastocaloric effect; electrocaloric effect; epitaxial ferroelectric ultrathin films; hysteresis loss