Exciting low-field dielectric tunability in clamshell
Exciting low-field dielectric tunability in clamshell
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翻盖式令人兴奋的低场介电可调性
DOI:
10.1016/j.jeurceramsoc.2018.07.045
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发表时间:
2018-12
影响因子:
5.7
通讯作者:
Wang Chun Chang
中科院分区:
文献类型:
--
作者:
Cheng Chao;Zhuang Yong Long;Lv Ping;Yu Yi;Sun Jie;Wang Shu Ting;Wang Chun Chang
The dielectric properties and dielectric tunability of the nacreous part of the clamshell were investigated. Microstructure characterizations reveal that the sample shows a “brick-and-mortar” structure composed of aragonitic CaCO3regions and bimacromolecule regions separated by transition regions consisting of crystalline particles surrounded by amorphous area. A ferroelectric-like dielectric tunability behavior was observed and an exciting dielectric tunability of 79% was achieved at 400 °C and 500 Hz within a small field increment of 34 V/cm. Such a low field scale for dielectric tunability near 80% rivals all known tunable dielectrics. Both thermally and electrically activated hopping motion of oxygen vacancies in the multilayered structures of the clamshell leads to the exciting low-field dielectric tunability. Our results dramatically expand the dielectric tunable materials and offer a facile way to achieve superior dielectric tunability in bio-multilayered materials.
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