Search results for "Ferroelectric thin films"

showing 4 items of 4 documents

Electromagnetically induced switching of ferroelectric thin films

2007

We analyze the interaction of an electromagnetic spike (one cycle) with a thin layer of ferroelectric medium with two equilibrium states. The model is the set of Maxwell equations coupled to the undamped Landau-Khalatnikov equation, where we do not assume slowly varying envelopes. From linear-scattering theory, we show that low-amplitude pulses can be completely reflected by the medium. Large-amplitude pulses can switch the ferroelectric. Using numerical simulations and analysis, we study this switching for long and short pulses, estimate the switching times, and provide useful information for experiments.

010302 applied physicsPhysicsCondensed matter physicsScatteringNumerical analysisThin layerFOS: Physical sciencesPattern Formation and Solitons (nlin.PS)Condensed Matter Physics01 natural sciencesFerroelectricityNonlinear Sciences - Pattern Formation and SolitonsElectronic Optical and Magnetic Materialssymbols.namesakeAmplitudeMaxwell's equations0103 physical sciencessymbolsFerroelectric thin filmsThin film010306 general physicsComputingMilieux_MISCELLANEOUS
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Synthesis and Solution Processing of Nylon‐5 Ferroelectric Thin Films: The Renaissance of Odd‐Nylons?

2020

540 Chemistry and allied sciencesMaterials sciencePolymers and Plastics540 ChemieOrganic ChemistryPolymer chemistryMaterials ChemistryFerroelectric thin filmsThe RenaissancePhysical and Theoretical ChemistryComposite materialCondensed Matter PhysicsMacromolecular Chemistry and Physics
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Size effects of static and dynamic polarization in ferroelectric thin film multilayers

2001

Abstract A thermodynamic theory for the calculation of static and dynamic polarization profiles of ferroelectric thin film multilayers is developed. The free energy functional is written down using a multilayer model in which c-domain layers of the ferroelectric material alternate with a-domain layers of a second ferroelectric materials. We assume that the interfaces are perfectly sharp and that the polarization at these boundaries is zero. The equilibrium polarization profile, its temperature and thickness dependencies were determined from the solutions of the Euler-Lagrange equations. A thickness induced ferroelectric phase transition is shown to exist and its transition temperature and c…

Phase transitionMaterials scienceCondensed matter physicsSpacetimebusiness.industryTransition temperatureCondensed Matter PhysicsPolarization (waves)FerroelectricityElectronic Optical and Magnetic MaterialsCondensed Matter::Materials ScienceOpticsControl and Systems EngineeringMaterials ChemistryCeramics and CompositesFerroelectric thin filmsWave vectorElectrical and Electronic EngineeringbusinessEnergy functionalIntegrated Ferroelectrics
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Physical properties of ferroelectric film with continuous space charge distribution

2014

We present a theory of ferroelectric phase transitions in a film with a homogeneously distributed space charge leading to the so-called built-in polarization. On the base of our complete solution of the problem of continuous space charge distribution in a ferroelectric film, we calculate the ferroelectric phase transition temperature , spatial polarization distribution in paraelectric and ferroelectric phases as well as hysteresis loop in the ferroelectric phase. We have shown that the presence of continuous space charge in a film inhibits the ferroelectricity in it: it lowers the ferroelectric phase transition temperature and coercive field. Our estimates of these differences show that the…

Phase transitionMaterials scienceCondensed matter physicsbusiness.industryDielectricCoercivityPolarization (waves)FerroelectricitySpace chargeCondensed Matter::Materials ScienceHysteresisOpticsFerroelectric thin filmsGeneral Materials SciencebusinessInstrumentationPhase Transitions : a Multinational Journal
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