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首页> 外文期刊>Applied Physics Letters >Organic and inorganic relaxor ferroelectrics with giant electrocaloric effect
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Organic and inorganic relaxor ferroelectrics with giant electrocaloric effect

机译：具有巨大电热效应的有机和无机弛豫铁电体

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摘要

The electrocaloric effect (ECE) in inorganic thin film and organic relaxor ferroelectrics is investigated by directly measuring the ECE around room temperature. The results reveal that giant ECEs can be obtained in the high energy electron irradiated poly(vinylidene fluoride-trifluoroethylene) relaxor copolymer and in the La-doped Pb(ZrTi)O_3 relaxor ceramic thin films, which are much larger than that from the normal ferroelectric counterparts. The large ECE observed, compared with normal ferroelectrics, is likely caused by the large number of disordered fluctuating polarization entities in relaxor ferroelectrics. Which can lead to extra entropy contributions and larger ECE.
机译：通过直接测量室温下的ECE，研究了无机薄膜和有机弛豫铁电材料中的电热效应（ECE）。结果表明，在高能电子辐照的聚偏二氟乙烯-三氟乙烯弛豫共聚物和掺La的Pb（ZrTi）O_3弛豫陶瓷薄膜中可以获得巨大的ECE，这比普通铁电薄膜大得多。同行。与正常铁电体相比，观察到的较大的ECE可能是由弛豫铁电体中大量无序波动的极化实体引起的。这可能导致额外的熵贡献和更大的ECE。

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  • 来源
    《Applied Physics Letters》 |2010年第16期|p.162904.1-162904.3|共3页
  • 作者

    S.G.Lu; B.Rozic; Q.M.Zhang; Z.Kutnjak; Xinyu Li; E.Furman; Lee J.Gorny; Minren Lin; B.Malic; M.Kosec; R.Blinc; R.Pirc;

  • 作者单位

    Department of Electrical Engineering, Materials Research Institute, The Pennsylvania State University,University Park, Pennsylvania 16802, USA;

    rnJozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia;

    rnDepartment of Electrical Engineering, Materials Research Institute, The Pennsylvania State University,University Park, Pennsylvania 16802, USA;

    rnJozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia;

    rnDepartment of Electrical Engineering, Materials Research Institute, The Pennsylvania State University,University Park, Pennsylvania 16802, USA;

    rnDepartment of Electrical Engineering, Materials Research Institute, The Pennsylvania State University,University Park, Pennsylvania 16802, USA;

    rnDepartment of Electrical Engineering, Materials Research Institute, The Pennsylvania State University,University Park, Pennsylvania 16802, USA;

    rnDepartment of Electrical Engineering, Materials Research Institute, The Pennsylvania State University,University Park, Pennsylvania 16802, USA;

    rnJozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia;

    rnJozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia;

    rnJozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia;

    rnJozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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