abstract |
A film having a high relative dielectric constant and a low dielectric loss tangent is provided. The present invention comprises a vinylidene fluoride / tetrafluoroethylene copolymer (A) in which vinylidene fluoride / tetrafluoroethylene has a molar ratio of 95/5 to 80/20, and has an α-type crystal structure and a β-type. A high dielectric film characterized in that the β-type crystal structure is 50% or more. [Selection figure] None |