| Reference : Prediction of giant elastocaloric strength and stress-mediated electrocaloric effect ... |
| Scientific journals : Article | |||
| Physical, chemical, mathematical & earth Sciences : Physics | |||
| http://hdl.handle.net/10993/21288 | |||
| Prediction of giant elastocaloric strength and stress-mediated electrocaloric effect in BaTiO3 single crystals | |
| English | |
| Liu, Yang [CNRS, UMR 8580, Ecole centrale de Paris, France > Laboratoire Structures, Propriétés et Modélisation des Solides > > ; Xi'an Jiaotong University, Xi'an, People's Republic of China > Multi-disciplinary Materials Research Center, Frontier Institute of Science and Technology and State Key Laboratory for Mechanical Behavior of Materials] | |
| Wei, Jie [CNRS, UMR 8580, Ecole centrale de Paris, France > Laboratoire Structures, Propriétés et Modélisation des Solides > > ; Xi'an Jiaotong University, Xi'an, People's Republic of China > Electronic Materials Research Laboratory, Key Laboratory of Ministry of Education] | |
| Janolin, Pierre-Eymeric [CNRS, UMR 8580, Ecole centrale de Paris, France > Laboratoire Structures, Propriétés et Modélisation des Solides] | |
| Infante, Ingrid C. [CNRS, UMR 8580, Ecole centrale de Paris, France > Laboratoire Structures, Propriétés et Modélisation des Solides] | |
Kreisel, Jens  [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit > ; CRP Gabriel Lippmann, Belvaux, Luxembourg > Département Science et Analyse des Matériaux] | |
| Lou, Xiaojie [Xi'an Jiaotong University, Xi'an, People's Republic of China > Multi-disciplinary Materials Research Center, Frontier Institute of Science and Technology and State Key Laboratory for Mechanical Behavior of Materials] | |
| Dkhil, Brahim [CNRS, UMR 8580, Ecole centrale de Paris, France > Laboratoire Structures, Propriétés et Modélisation des Solides] | |
| 2014 | |
| Physical Review. B | |
| 90 | |
| 10 | |
| Yes (verified by ORBilu) | |
| International | |
| 1098-0121 | |
| [en] An applied stress field σ3 can reversibly change the temperature of an elastocaloric material under adiabatic
conditions, and the temperature change Tσ3 is usually maximized near phase transitions.Using a thermodynamic approach, we demonstrate that an elastocaloric strength α = | Tσ3 |/|σ3| of 0.016 K/MPa can be achieved benefiting from the full first-order phase transition in BaTiO3 single crystals, which is comparable with typical elastocaloric materials reported in the literature. The elastocaloric temperature change is found to be giant (3.2 K) under a stress of 200 MPa with a temperature span of over 50 K, which can be significantly larger than its electrocaloric counterpart (∼1 K). Moreover, it is found that the elastocaloric strength can be remarkably enhanced (2.32 K/MPa) as long as the phase transition is triggered even by a modest stress near the sharp first-order phase transition, which is two orders of magnitude larger than those accomplished by full transition. Therefore, even a low stress (<30 MPa) can induce a modest elastocaloric effect (1.3 K) comparable with the electrocaloric counterpart, which is accompanied by a reduction of the working temperature span. In addition, it is found that the electrocaloric peak under tensile stresses moves towards higher temperatures with its magnitude slightly enhanced. Hopefully, our study will stimulate further investigations on elastocaloric and stress-mediated electrocaloric effects in ferroelectrics. | |
| http://hdl.handle.net/10993/21288 | |
| 10.1103/PhysRevB.90.104107 | |
| Times Cited: 1 Infante, Ingrid/D-4450-2014; Janolin, Pierre-Eymeric/B-3271-2008; Dkhil, Brahim/O-8939-2014; Lou, Xiaojie/B-6551-2009; wei, jie/G-2864-2011 Infante, Ingrid/0000-0003-3929-6614; Janolin, Pierre-Eymeric/0000-0003-3385-5374; Dkhil, Brahim/0000-0001-6155-059X 1
Journal Article |
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