A scaling law for distinct electrocaloric cooling performance in low-dimensional organic, relaxor and anti-ferroelectrics
文献类型：期刊论文
| 作者 | Shi, Yuping1,2,3; Huang, Limin2; Soh, Ai Kah3; Weng, George J.4; Liu, Shuangyi5 ; Redfern, Simon A. T.6,7
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| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2017-09-11 |
| 卷号 | 7页码:9 |
| ISSN号 | 2045-2322 |
| DOI | 10.1038/s41598-017-11633-y |
| 通讯作者 | Huang, LM (reprint author), South Univ Sci & Technol China, Dept Chem, Shenzhen 518055, Peoples R China. |
| 英文摘要 | Electrocaloric (EC) materials show promise in eco-friendly solid-state refrigeration and integrable on-chip thermal management. While direct measurement of EC thin-films still remains challenging, a generic theoretical framework for quantifying the cooling properties of rich EC materials including normal-, relaxor-, organic-and anti-ferroelectrics is imperative for exploiting new flexible and roomtemperature cooling alternatives. Here, we present a versatile theory that combines Master equation with Maxwell relations and analytically relates the macroscopic cooling responses in EC materials with the intrinsic diffuseness of phase transitions and correlation characteristics. Under increased electric fields, both EC entropy and adiabatic temperature changes increase quadratically initially, followed by further linear growth and eventual gradual saturation. The upper bound of entropy change (Delta S-max) is limited by distinct correlation volumes (V-cr) and transition diffuseness. The linearity between V-cr and the transition diffuseness is emphasized, while Delta S-max = 300 kJ/(K.m(3)) is obtained for Pb0.8Ba0.2ZrO3. The Delta S-max in antiferroelectric Pb0.95Zr0.05TiO3, Pb0.8Ba0.2ZrO3 and polymeric ferroelectrics scales proportionally with V-cr(-2.2), owing to the one-dimensional structural constraint on lattice-scale depolarization dynamics; whereas Delta S-max in relaxor and normal ferroelectrics scales as Delta S-max similar to V-cr(-0.37), which tallies with a dipolar interaction exponent of 2/3 in EC materials and the well-proven fractional dimensionality of 2.5 for ferroelectric domain walls. |
| 资助项目 | Research Grants Council of Hong Kong SAR ; Basic Research Fund of Shenzhen[JCYJ20150507170334573] ; FRGS Grant by the Ministry of Higher Education, Malaysia[FRGS/2/2013/SG06/MUSM/01/1] ; Advanced Engineering Programme and School of Engineering, Monash University Malaysia ; US National Science Foundation[CMMI-1162431] ; Hundreds talents program of Chinese Academy of Sciences[R52A261Z10] ; Fundamental and advanced technology Research Funds of Chongqing[cstc2015jcyjbx0103] ; British Council Newton Fund[172724105] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| 出版者 | NATURE PUBLISHING GROUP |
| WOS记录号 | WOS:000410063400040 |
| 源URL | [http://172.16.51.4:88/handle/2HOD01W0/157]  |
| 专题 | 微纳制造与系统集成研究中心 |
| 通讯作者 | Huang, Limin |
| 作者单位 | 1.Hong Kong Univ Sci & Technol, Dept Mech & Aerosp Engn, Kowloon, Hong Kong, Peoples R China 2.South Univ Sci & Technol China, Dept Chem, Shenzhen 518055, Peoples R China 3.Monash Univ Malaysia, Sch Engn, Bandar Sunway 46150, Malaysia 4.Rutgers State Univ, Dept Mech & Aerosp Engn, New Brunswick, NJ 08903 USA 5.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 6.Ctr High Pressure Sci & Technol Adv Res, Shanghai 201203, Peoples R China 7.Univ Cambridge, Dept Earth Sci, Downing St, Cambridge CB2 3EQ, England |
| 推荐引用方式 GB/T 7714 | Shi, Yuping,Huang, Limin,Soh, Ai Kah,et al. A scaling law for distinct electrocaloric cooling performance in low-dimensional organic, relaxor and anti-ferroelectrics[J]. SCIENTIFIC REPORTS,2017,7:9. |
| APA | Shi, Yuping,Huang, Limin,Soh, Ai Kah,Weng, George J.,Liu, Shuangyi,&Redfern, Simon A. T..(2017).A scaling law for distinct electrocaloric cooling performance in low-dimensional organic, relaxor and anti-ferroelectrics.SCIENTIFIC REPORTS,7,9. |
| MLA | Shi, Yuping,et al."A scaling law for distinct electrocaloric cooling performance in low-dimensional organic, relaxor and anti-ferroelectrics".SCIENTIFIC REPORTS 7(2017):9. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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