Molecular ferroelectrics - Open Access .click

Results 1 to 10 of about 1,751 (243)

Geometric isotope effect of deuteration in a hydrogen-bonded host–guest crystal

Nature Communications, 2018
Deuterating a hydrogen bond can change the bond’s geometry, a phenomenon known as the geometric isotope effect (GIE). Here, the authors find that a hydrogen-bonded host–guest crystal, imidazolium hydrogen terephthalate, exhibits significant GIE on its ...
Chao Shi +4 more
doaj +1 more source

Origin of dielectric relaxor behavior in PVDF-based copolymer and terpolymer films

AIP Advances, 2018
Relaxor ferroelectrics exhibit frequency-dispersion of their dielectric permittivity peak as a function of temperature, the origin of which has been widely debated. Microscopic understanding of such behavior for polymeric ferroelectrics has presented new
Abhijit Pramanick +8 more
doaj +1 more source

Organic–Inorganic Hybrid Perovskite Ferroelectric Nanosheets Synthesized by a Room‐Temperature Antisolvent Method

Advanced Science
Over the past years, the application potential of ferroelectric nanomaterials with unique physical properties for modern electronics is highlighted to a large extent.
Tai‐Ting Sha +9 more
doaj +1 more source

First-Principles Calculation of Physical Tensors of α-Diisopropylammonium Bromide (α-DIPAB) Molecular Ferroelectric Crystal

Frontiers in Physics, 2019
We report accurate calculations of tonsorial elements of α-Diisopropylammonium bromide (α-DIPAB) molecular ferroelectric crystal. In particular, elastic, piezoelectric and dielectric tensors were computed using density functional theory (DFT)-based ...
Ahmad Alsaad +6 more
doaj +1 more source

Mechanically deformable organic ferroelectric crystal with plasticity optimized by fluorination

Nature Communications
The ability of plastic deformation exerts in bulk crystals would offer great promise for ferroelectrics to achieve emerging and exciting applications. However, conventional ferroelectric crystals generally suffer from inherent brittleness and are easy to
Pei-Zhi Huang +11 more
doaj +1 more source

Porous flexible molecular-based piezoelectric composite achieves milliwatt output power density

Nature Communications
Molecular ferroelectrics have made breakthrough progress in intrinsic piezoelectric response that can be on par with advanced inorganic piezoelectric ceramics.
Jia-Qi Luo +7 more
doaj +1 more source

Molecular Orbital Calculation of Lead-Free Perovskite Compounds for Efficient Use of Alkaline and Alkaline Earth Metals

Crystals, 2020
The effective ionic charges of lead-free perovskite dielectric complex compounds were investigated with molecular orbital calculation. The base model was a double perovskite cluster that consisted of octahedral oxygen cages with a transition metal ion of
Naohisa Takesue, Jun-ichi Saito
doaj +1 more source

Volume‐Confined Fabrication of Large‐Scale Single‐Crystalline Molecular Ferroelectric Thin Films and Their Applications in 2D Materials

Advanced Science
With 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
doaj +1 more source

Subterahertz dielectric relaxation in lead-free Ba(Zr,Ti)O3 relaxor ferroelectrics

Nature Communications, 2016
Relaxor ferroelectrics possess potential microwave frequency applications due to characteristic dielectric relaxation properties however the underlying mechanism is debated.
D. Wang +4 more
doaj +1 more source

Is There A Pure Electronic Ferroelectric?

Advanced Electronic Materials
Different from traditional ferroelectrics whose polarization stems from ionic displacements mediated by phonons, electronic ferroelectrics exhibit spontaneous polarization originating from polar electronic ordering.
Xudong Wang +8 more
doaj +1 more source

science
biotechnology
molecular ferroelectric