铁电聚合物的局域电场与居里跃迁研究

[1991] Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials Pub Date : 1991-07-08 DOI:10.1109/ICPADM.1991.172267

H. Ogura, A. Chiba, K. Kase

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引用次数: 0

摘要

研究了聚偏氟乙烯(PVDF)和偏氟乙烯/三氟乙烯(VDF/TrFE)共聚物的铁电性能，重点研究了它们的局部电场和相变行为。本工作的目的是:(1)找出PVDF和VDF/TrFE共聚物的自发极化的理论值;(2)实验评估PVDF β相晶体的洛伦兹因子，该因子是局部电场与自发极化之间的关系;(3)研究静电相互作用对VDF/TrFE共聚物铁电-准电相变的影响。

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Study of the local electric field and the Curie transition of ferroelectric polymers

The ferroelectric properties of polyvinylidene fluoride (PVDF) and vinylidene fluoride/trifluoroethylene (VDF/TrFE) copolymers were investigated, with special emphasis on their local electric field and phase transition behavior. The objective of this work was (1) to find the theoretical values of the spontaneous polarization of PVDF and VDF/TrFE copolymers; (2) to evaluate experimentally the Lorentz factor for PVDF beta -phase crystal, which relates the local electric field to the spontaneous polarization; and (3) to investigate the influence of the electrostatic interactions on ferroelectric-to-paraelectric phase transition of VDF/TrFE copolymers.<>

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[1991] Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials

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