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Title: The coexistence of negative and positive electrocaloric effect in the ferroelectric thin film for solid-state refrigeration Author: Li, B.; Wang, J. B.; Zhong, X. L. (...) Source: Europhysics Letters, 2013, 102: 47004 |
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The coexistence of the negative and positive electrocaloric effect in ferroelectric thin films for solid-state refrigeration ×÷Õß:Li, B (Li, B.)[ 1 ] ; Wang, JB (Wang, J. B.); Zhong, XL (Zhong, X. L.); Wang, F (Wang, F.); Zeng, YK (Zeng, Y. K.); Zhou, YC (Zhou, Y. C.) EPL ¾í: 102 ÆÚ: 4 ÎÄÏ׺Å: 47004 DOI: 10.1209/0295-5075/102/47004 ³ö°æÄê: MAY 2013 ²é¿´ÆÚ¿¯ÐÅÏ¢ ÕªÒª The coexistence of the negative and positive electrocaloric effect (ECE) caused by an applied electric field direction different from the dipole direction of 180 degrees domain structures is firstly found in ferroelectric thin films using the phase-field-based simulation. The calculation results reveal that a negative adiabatic temperature change (Delta T = -3.4K) and a positive adiabatic temperature change (Delta T = 3.1K) coexist in the PbTiO3 thin film with 180 degrees domain structures under the dimensional electric field Delta E = 0.1. The coexistence of negative and positive ECE in a thin film can provide a new way to design solid-state refrigerators. Copyright (C) EPLA, 2013 ¹Ø¼ü´Ê KeyWords Plus EROVSKITES×÷ÕßÐÅÏ¢ ͨѶ×÷ÕßµØÖ·: Li, B (ͨѶ×÷Õß) ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ Xiangtan Univ, Key Lab Low Dimens Mat & Applicat Technol, Minist Educ, Xiangtan 411105, Hunan, Peoples R China. µØÖ·: ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ [ 1 ] Xiangtan Univ, Key Lab Low Dimens Mat & Applicat Technol, Minist Educ, Xiangtan 411105, Hunan, Peoples R China ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ [ 2 ] Xiangtan Univ, Fac Mat Optoelect & Phys, Xiangtan 411105, Hunan, Peoples R China µç×ÓÓʼþµØÖ·:jbwang@xtu.edu.cn; xlzhong@xtu.edu.cn »ù½ð×ÊÖúÖÂл »ù½ð×ÊÖú»ú¹¹ ÊÚȨºÅ National Natural Science Foundation of China 11072208 11272274 11032010 Hunan Provincial Natural Science Foundation of China 12JJ1007 Specialized Research Fund for the Doctoral Program of Higher Education 20114301110004 Foundation for the Author of National Excellent Doctoral Dissertation of PR China 201143 Innovation Fund Project for Graduate Student of Hunan Province CX2012B246 ²é¿´»ù½ð×ÊÖúÐÅÏ¢ ³ö°æÉÌ EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY, 6 RUE DES FRERES LUMIERE, MULHOUSE, 68200, FRANCE Àà±ð / ·ÖÀà Ñо¿·½Ïò hysicsWeb of Science Àà±ð hysics, MultidisciplinaryÎÄÏ×ÐÅÏ¢ ÎÄÏ×ÀàÐÍ:Article ÓïÖÖ:English Èë²ØºÅ: WOS:000321118600032 ISSN: 0295-5075 ÆÚ¿¯ÐÅÏ¢ Impact Factor (Ó°ÏìÒò×Ó): Journal Citation Reports® ÆäËûÐÅÏ¢ IDS ºÅ: 173YF Web of Science ºËÐĺϼ¯ÖÐµÄ "ÒýÓõIJο¼ÎÄÏ×": 27 Web of Science ºËÐĺϼ¯ÖÐµÄ "±»ÒýƵ´Î": 1 |

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