Flexoelectric Induced Caloric Effect in Truncated Pyramid Shaped Ba 0.67 Sr 0.33 TiO 3 Ferroelectric Material
作者： Satyanarayan Patel , Aditya Chauhan , Niyaz Ahamad Madhar , Bouraoui Ilahi , Rahul Vaish
DOI: 10.1007/S11664-017-5362-7
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摘要: Solid state refrigeration based on ferroelectric materials can potentially be competing in not-in-kind technology. However, their functionality is currently limited to Curie temperatures. Through this article, authors have attempted describe an unexplored component of the stress-driven caloric effect, obtainable beyond point. The phenomenon, termed as flexocaloric effect (FCE), relies inhomogeneous straining crystal lattice induce polarization centrosymmetric crystals (flexoelectricity). For study, a truncated pyramid geometry was selected, and dependence sample height capacity studied. A peak temperature change 1.75 K (313 K) estimated for Ba0.67Sr0.33TiO3 (BST) ceramics employing configuration.
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