Controlling the domain structure of ferroelectric nanoparticles using tunable shells

29 Aug 2019 Morozovska Anna N. Eliseev Eugene A. Fomichov Yevhen M. Vysochanskii Yulian M. Reshetnyak Victor Yu. Evans Dean R.

The possibility of controlling the domain structure in spherical nanoparticles of uniaxial and multiaxial ferroelectrics using a shell with tunable dielectric properties is studied in the framework of Landau-Ginzburg-Devonshire theory. Finite element modeling and analytical calculations are performed for Sn2P2S6 and BaTiO3 nanoparticles covered with high-k polymer, temperature dependent isotropic paraelectric strontium titanate, or anisotropic liquid crystal shells with a strongly temperature dependent dielectric permittivity tensor... (read more)

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