Results 11 to 20 of about 24,071 (183)
Fractional quantum ferroelectricity
Nature Communications, 2023 For an ordinary ferroelectric, the magnitude of the spontaneous electric polarization is at least one order of magnitude smaller than that resulting from the ionic displacement of the lattice vectors, and the direction of the spontaneous electric ...
Junyi Ji +3 more
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Advanced Science, 2023 AbstractFreestanding slender fluid filaments of room‐temperature ferroelectric nematic liquid crystals are described. They are stabilized either by internal electric fields of bound charges formed due to polarization splay or by external voltage applied between suspending wires.
Marcell T. Máthé +4 more
openaire +5 more sources
Ferroelectric Electron Holography [PDF]
Microscopy and Microanalysis, 2002 Ferroelectrics are increasingly important as materials in semiconductor technology, e.g. for building non-volatile memory chips. For optimisation of the properties of such devices, there is an urgent need for methods, which analyse the ferroelectric properties at nanometer scale. Furthermore, the basic understanding of the interaction of ferroelectrics
Hannes, Lichte +3 more
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Multiferroicity in an organic charge-transfer salt: Electric-dipole-driven magnetism [PDF]
, 2011 Multiferroics, showing simultaneous ordering of electrical and magnetic degrees of freedom, are remarkable materials as seen from both the academic and technological points of view.
Alois Loidl +40 more
core +2 more sources
Ferroelectric Dead Layer Driven by a Polar Interface [PDF]
, 2010 Based on first-principles and model calculations we investigate the effect of polar interfaces on the ferroelectric stability of thin-film ferroelectrics. As a representative model, we consider a TiO2-terminated BaTiO3 film with LaO monolayers at the two
A. F. Devonshire +10 more
core +4 more sources
Ferroelectricity enhancement in ferroelectric nanotubes [PDF]
Phase Transitions, 2007 In this paper we study the size effects of the ferroelectric nanotube phase diagrams and polar properties allowing for effective surface tension and depolarization field influence. The approximate analytical expression for the paraelectric-ferroelectric transition temperature dependence on the radii of nanotube, polarization gradient coefficient ...
Morozovska, A. N. +2 more
openaire +2 more sources
Ab Initio Study of Ferroelectric Critical Size of SnTe Low-Dimensional Nanostructures
Nanomaterials, 2020 Beyond a ferroelectric critical thickness of several nanometers existed in conventional ferroelectric perovskite oxides, ferroelectricity in ultimately thin dimensions was recently discovered in SnTe monolayers.
Takahiro Shimada +4 more
doaj +1 more source
An antisite defect mechanism for room temperature ferroelectricity in orthoferrites
Nature Communications, 2021 Ferroelectricity in orthoferrite perovskites has stimulated intense research, but the mechanism remains unclear. Here, the authors propose an antisite defect mechanism for introducing ferroelectricity in magnetically ordered YFeO3 and the family of rare ...
Shuai Ning +9 more
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Overcoming Size Effects in Ferroelectric Thin Films
Advanced Physics Research, 2023 Ferroelectric thin films have recently received unprecedented attention due to the need to miniaturize electronic circuit devices. Synthesis and deposition processes along with theoretical calculations are improved remarkably to realize stable ...
Sung Hyuk Park +3 more
doaj +1 more source
Nature Communications, 2021 The ferroelectricity in hybrid perovskite CH3NH3PbI3 is under debate. Here, the authors predict a Pb-free hybrid perovskite N(CH3)4SnI3 with non-polar molecular cation N(CH3)4+ showing strong ferroelectricity, good stability, and high visible-light ...
Hai Wei +3 more
doaj +1 more source