Polarization switching at the nanoscale in ferroelectric copolymer thin films | Zendy

R. V. Gaynutdinov | Zendy; S. V. Mitko | Zendy; S. G. Yudin | Zendy; V. M. Fridkin | Zendy; Stephen Ducharme | Zendy

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Polarization switching at the nanoscale in ferroelectric copolymer thin films

Author(s) -

R. V. Gaynutdinov,

S. V. Mitko,

S. G. Yudin,

V. M. Fridkin,

Stephen Ducharme

Publication year - 2011

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3646906

Subject(s) - materials science , ferroelectricity , nucleation , polarization (electrochemistry) , thin film , nanoscopic scale , kinetics , copolymer , coercivity , switching time , condensed matter physics , optoelectronics , nanotechnology , composite material , polymer , dielectric , thermodynamics , chemistry , physics , quantum mechanics

The polarization switching kinetics were measured at the nanoscale in continuous thin films of a ferroelectric copolymer of vinylidene fluoride and trifluoroethylene. The dependence of the switching rate on voltage for a 54-nm thick film exhibits extrinsic nucleation and domain-growth type kinetics with no true threshold coercive field, and is qualitatively different from the behavior of an 18-nm thick film, which exhibits intrinsic switching kinetics, and a true threshold field. The results are consistent with studies of thin film capacitors of much larger area and with a recent refinement of the theory of the critical size for intrinsic switching.

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