Polarization Behavior in Vinylidene Fluoride-Trifluoroethylene Copolymer Thin Films

スポンサーリンク

概要

• 論文の詳細を見る

• The polarization behavior in films of vinylidene fluoride trifluoroethylene copolymer (P(VDF-TrFE), VDF/TrFE molar content ratio of 75/25) of thickness less than 1 μm is reported. Ferroelectricity is maintained even in 0.06 μm-thick film, whose saturated polarization is as large as that f or thick films (100 mC/m^2). However, the crystallites are much smaller than in thick film, and the coercive field in the thin film is higher (125 MV/m) for the 0.06 μm-thick film) than that of the thick one (40 MV/m). The switching time does not follow the exponential law, but is inversely proportional to the applied field. To analyze these data, we introduce a model in which the thin film contains many defects in its crystalline phase, and the local field in the film is modulated by the defects. The observed switching behavior is consistent with the model.

• 社団法人応用物理学会の論文
• 1986-03-20

著者

• OHIGASHI Hiroji

  Engineering Research Laboratory Toray Industries Inc.

• KIMURA Kuniko

  Engineering Research Laboratory Toray Industries Inc.

関連論文

• Analysis of Frequency Response Characteristics of Polymer Ultrasonic Transducers
• Ferroelectric Copolymers of Vinylidenefluoride and Trifluoroethylene with a Large Electromechanical Coupling Factor
• Polarization Behavior in Vinylidene Fluoride-Trifluoroethylene Copolymer Thin Films
• Analysis of Impulse Response Characterisstics of Polymer Ultrasonic Transducers : Mechanical and Acoustical Properties
• A Wide-Band Polymer Ultrasonic Transducer Using Acoustic Impedance Matching Technique : Mechanical and Acoustical Properties

スポンサーリンク