Low loss and high permittivity composites based on poly(vinylidene fluoride-chlorotrifluoroethylene) and lead lanthanum zirconate titanate

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• 作者：Fei Wen^a ; ^{wenfei@hdu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Xiaoyang Liu^a ; Zhuo Xu^b ; Hua Tang^b ; Wangfeng Bai^a ; Wen-Sheng Zhao^a ; Peng Zheng^a ; Luwen Wang^a ; Gaofeng Wang^a ; ^{gaofeng@hdu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Ceramic composites ; Low dielectric loss ; High permittivity ; P(VDF-CTFE)
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：43
• 期：1
• 页码：1504-1508
• 全文大小：691 K

文摘

Lanthanum doped lead zirconate titanate stannate antiferroelectric ceramic (Pb_0.97La_0.02)(Zr_0.63Sn_0.3Ti_0.07)O₃ (PLZST) is proposed as an inorganic filler. P(VDF-CTFE)/PLZST composites with various compositions are fabricated via the solution cast process. The dielectric permittivity of the composites is significantly increased and the inherent loss is reduced in a wide range of frequencies at the same time. At 100 Hz, the 40% PLZST loaded composite shows a dielectric permittivity of 28 (3 times more than that of the neat polymer), and a low loss of 0.045 (near half of that in the neat polymer). The low loss of the composite is most likely due to the slower increasing rate of the conductivity by comparison to the dielectric permittivity.