Results 91 to 100 of about 191,244 (266)
Plastic/ferroelectric molecular crystals: Ferroelectric performance in bulk polycrystalline forms
APL Materials, 2021 Plastic crystals are a class of compounds composed of small molecules with globular structures. Plastic crystals exhibit various unique features, most of which arise from the rotator motion and orientational disorder of the constituent molecules.
Jun Harada
doaj +1 more source
Ultrasensitive and Broadband MoS2 Photodetector Driven by Ferroelectrics [PDF]
Advances in Materials, 2015 A few-layer MoS2 photodetector driven by poly(vinylidene fluoride-trifluoroethylene) ferroelectrics is achieved. The detectivity and responsitivity are up to 2.2 × 10(12) Jones and 2570 A W(-1), respectively, at 635 nm with ZERO gate bias.
Xudong Wang +17 more
semanticscholar +1 more source
Ferroelectrics at the nanoscale [PDF]
physica status solidi (a), 2009 AbstractThere are several factors which make the investigation and understanding of nanoscale ferroelectrics particularly timely and important. Firstly, there is a market pressure, primarily from the electronics industry, to integrate ferroelectrics into devices with progressive decreases in size and increases in morphological complexity.
openaire +3 more sources
Ferroelectricity enhancement in ferroelectric nanotubes [PDF]
arXiv, 2006 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 ...
arxiv
The Effect of Electric Aging on Vinylidene Fluoride Copolymers for Ferroelectric Memory
NanomaterialsCopolymers based on vinylidene fluoride are potential materials for ferroelectric memory elements. The trend in studies showing that a decrease in the degree of crystallinity can lead to an unexpected increase in the electric breakdown field is noted. An
Valentin V. Kochervinskii +8 more
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Stability of Vortex Phases in Ferroelectric Easy-Plane nano-Cylinders [PDF]
arXiv, 2008 Bounded charges induced by the polarization gradient in finite-size ferroelectrics are known to produce the unfavorable depolarization electric field that suppresses the uniform ferroelectric state. To reduce the depolarization energy the non-uniform vortex (toroidal) state is formed inside ferroelectric nano-particles, nano-disks, and nano-rods. Based
arxiv
Large Piezoelectric Response in Hybrid Rare-Earth Double Perovskite Relaxor Ferroelectrics.
Journal of the American Chemical Society, 2020 Piezoelectric materials are technologically important, and the most used are perovskite ferroelectrics. In recent years, more and more emerging areas have put forward new requirements for piezoelectric materials, such as light weight, low acoustic ...
Chao Shi +7 more
semanticscholar +1 more source
Size and Time Rescaling at the Paraelectric to Ferroelectric Phase Transition in BaTiO$_3$ [PDF]
arXiv, 2009 We describe length and time rescaling across the paraelectric to ferroelectric phase transition in BaTiO$_3$. Small ferroelectric clusters are unable to grow in the paraelectric phase and exist for a short period of time only. The onset of the phase transition invokes a rescaling of both size and time lenghts as necessary ingredients for ...
arxiv
The quest for electronic ferroelectricity in organic charge-transfer crystals [PDF]
arXiv, 2019 Organic ferroelectric materials are in demand in the growing field of environmentally friendly, lightweight electronics. Donor-Acceptor charge transfer crystals have been recently proposed as a new class of organic ferroelectrics, which may possess a new kind of ferroelectricity, the so-called electronic ferroelectricity, larger and with faster ...
arxiv
Advanced ScienceWith outstanding advantages of chemical synthesis, structural diversity, and mechanical flexibility, molecular ferroelectrics have attracted increasing attention, demonstrating themselves as promising candidates for next‐generation wearable electronics ...
Xiao‐Xing Cao +11 more
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