Journal ArticleDOI
Room-temperature ferroelectricity in diisopropylammonium bromide
TLDR
A room-temperature ferroelectric, diisopropylammonium bromide (DPB) with dielectric constant e ≈ 12,000 and a clear hysteresis loop at Tc = 425 K is reported in this article.Abstract:
A room-temperature ferroelectric, diisopropylammonium bromide (DPB), with dielectric constant e ≈ 12 000 and a clear hysteresis loop at Tc = 425 K is reported. At 417 K DPB undergoes the irreversible phase transition from nonpolar orthorhombic P212121 to the ferroelectric monoclinic phase (P21) and subsequently, at 425 K, to the paraelectric prototype phase (P21/m). The molecular mechanism of the paraelectric–ferroelectric transition is ascribed to the ‘order–disorder’ behaviour of the diisopropylammonium cations.read more
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Introducing DDEC6 atomic population analysis: part 2. Computed results for a wide range of periodic and nonperiodic materials
TL;DR: In this article, the DDEC6 method reproduces important chemical, theoretical, and experimental properties across an extremely broad range of material types including small and large molecules, organometallics, nanoclusters, porous solids, nonporous solids and solid surfaces.
Journal ArticleDOI
Flexible ferroelectric organic crystals.
Magdalena Owczarek,Karl A. Hujsak,Daniel P. Ferris,Aleksandrs Prokofjevs,Irena Majerz,Przemyså Aw Szklarz,Huacheng Zhang,Amy A. Sarjeant,Charlotte L. Stern,Ryszard Jakubas,Seungbum Hong,Seungbum Hong,Vinayak P. Dravid,J. Fraser Stoddart +13 more
TL;DR: Trisubstituted haloimidazoles not only display ferroelectricity and piezoelectricity—the properties that originate from their non-centrosymmetric crystal lattice—but also lend their crystalline mechanical properties to fine-tuning in a controllable manner by disrupting the weak halogen bonds between the molecules.
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Pure β-phase formation in polyvinylidene fluoride (PVDF)-carbon nanotube composites
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Strain-based scanning probe microscopies for functional materials, biological structures, and electrochemical systems
TL;DR: Strain and electromechanical coupling are ubiquitous in nature, and exist in many processes involved in information technology, energy conversion, and biological phenomena as discussed by the authors, and they have emerged as powerful tools to probe and manipulate materials, structures, and systems at the nanoscale.
Journal ArticleDOI
Molecular ferroelectrics: where electronics meet biology
TL;DR: Historical notes on ferroelectrics are presented, followed by an overview of the fundamentals of ferroelectricity, and the latest developments in molecular ferroElectrics and biological ferroElectricity are highlighted.
References
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Book
Principles and Applications of Ferroelectrics and Related Materials
TL;DR: In this paper, the theory of ferroelectricity in terms of soft modes and lattice dynamics is developed and modern techniques of measurement, including X-ray, optic, and neutron scattering, infra-red absorption, and magnetic resonance.
Journal ArticleDOI
Applications of Modern Ferroelectrics
TL;DR: Electroelectric arrays of lead zirconate titanate have been reported on Pt nanowire interconnects and nanorings with 5-nanometer diameters and electron emission from ferroelectrics yields cheap, high-power microwave devices and miniature x-ray and neutron sources.
Journal ArticleDOI
Ferroelectric Metal–Organic Frameworks
Wen Zhang,Ren-Gen Xiong +1 more
TL;DR: The ferroelectric properties of some lately reported MOFs will be presented in this talk, covering their triggering mechanism, designing strategies and potential applications as multifunctional materials.
Journal ArticleDOI
Chemical aspects of solution routes to perovskite-phase mixed-metal oxides from metal-organic precursors
TL;DR: In this article, a review of the reaction chemistry occurring in solution routes to multicomponent metal oxides from metal-organic precursors is presented, with specific attention on those reports where mechanistic insight is presented.
Journal ArticleDOI
Diisopropylammonium Chloride: A Ferroelectric Organic Salt with a High Phase Transition Temperature and Practical Utilization Level of Spontaneous Polarization
TL;DR: A simple organic salt, diisopropylammonium chloride, shows the highest ferroelectric phase transition temperature among molecule-based ferroelectrics with a large spontaneous polarization, making it a candidate for practical technological applications.