منابع مشابه
Ferroelectric Optics:Optical Bistability in Nonlinear Kerr Ferroelectric Materials
Ferroelectric oxides with perovskite structure such as PbLaTiO3 (PLT), BaTiO3, PbTiO3, SrBi2Ta2O9 and LiNbO3 are very attractive class of materials which possess numerous useful properties such as high dielectric constant, large spontaneous polarization, and remarkable optical nonlinearity. Potential applications of these materials include real-time holography, correlation filtering and various...
متن کاملFerroelectric control of magnetic anisotropy.
We demonstrate unambiguous evidence of the electric field control of magnetic anisotropy in a wedge-shaped Co film of varying thickness. A copolymer ferroelectric of 70% vinylidene fluoride with 30% trifluoroethylene, P(VDF-TrFE) overlays the Co wedge, providing a large switchable electric field. As the ferroelectric polarization is switched from up to down, the magnetic anisotropy of the Co fi...
متن کاملExistence, uniqueness and homogenization for ferroelectric materials
We discuss existence, uniqueness, and homogenization results for a class of rate-independent, nonlinear ferroelectric models. We show that these models can be formulated in an energetic framework which is based on the elastic and the electric displacements as reversible variables and on interior, irreversible variables like the remanent polarization. The PDE system defining the model is restate...
متن کاملFerroelectric translational antiphase boundaries in nonpolar materials
Ferroelectric materials are heavily used in electro-mechanics and electronics. Inside the ferroelectric, domain walls separate regions in which the spontaneous polarization is differently oriented. Properties of ferroelectric domain walls can differ from those of the domains themselves, leading to new exploitable phenomena. Even more exciting is that a non-ferroelectric material may have domain...
متن کاملDynamic pyroelectric enhancement of homogeneous ferroelectric materials
The time-dependent thermal response to a step-wise temperature increase of a ferroelectric plate of BaTiO3 of finite thickness was determined using a combination of basic heat transfer relations to model the temperature variation in the ferroelectric as a function of time and a thermodynamic model based on a modified Landau formalism to calculate the polarization profile due to the temperature ...
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ژورنال
عنوان ژورنال: Bulletin of Materials Science
سال: 1994
ISSN: 0250-4707,0973-7669
DOI: 10.1007/bf02747238