Results 11 to 20 of about 186,264 (277)

Structural geometry of the layered perovskite-type (CH3CH2CH2NH3)2CuCl4 single crystal near phase transition temperatures

open access: yesAIP Advances, 2018
Chemical shifts and spin–lattice relaxation times are measured using 1H MAS NMR, 13C CP/MAS NMR, and 14N MAS NMR techniques to understand the structural geometry and dynamics of the alkyl and ammonium groups in layered perovskite (CH3CH2CH2NH3)2CuCl4 ...
Seong Eun Jang, Mi Jung Kim, Ae Ran Lim
doaj   +1 more source

Ferroelectric Dead Layer Driven by a Polar Interface [PDF]

open access: yes, 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

Thermodynamic, Physical, and Structural Characteristics in Layered Hybrid Type (C2H5NH3)2MCl4 (M = 59Co, 63Cu, 65Zn, and 113Cd) Crystals

open access: yesMolecules, 2020
The thermal, physical, and molecular dynamics of layered hybrid type (C2H5NH3)2MCl4 (M = 59Co, 63Cu, 65Zn, and 113Cd) crystals were investigated by thermogravimetric analysis (TGA) and magic angle spinning nuclear magnetic resonance (MAS NMR ...
Ae Ran Lim
doaj   +1 more source

Fast-Response Electrostatic Actuator Based on Nano-Gap

open access: yesMicromachines, 2017
The possibility of constructing new high-performance electrostatic fast actuators based on energy transformation in nanometer gaps is considered. The construction and the properties of the operation of such devices as well as their typical parameters are
Edward Kostsov, Alexei Sokolov
doaj   +1 more source

Ferroelectric Polarization Enhancement in Hafnium-Based Oxides Through Capping Layer Engineering

open access: yesIEEE Journal of the Electron Devices Society, 2022
In this work, we investigate that the capping layer (CL) engineering of aluminum oxide (AlOx) on the dopant-free hafnium oxide (HfOx) and the hafnium zirconium oxide (HfZrOx) ferroelectric metal-ferroelectric-metal (MFM) capacitors. The AlOx CL featuring
Hsuan-Han Chen   +5 more
doaj   +1 more source

Optical second harmonic generation probe of two-dimensional ferroelectricity [PDF]

open access: yes, 1999
Optical second harmonic generation (SHG) is used as a noninvasive probe of two-dimensional (2D) ferroelectricity in Langmuir-Blodgett (LB) films of copolymer vinylidene fluoride with trifluorethylene.
Aktsipetrov   +16 more
core   +2 more sources

Effects of paramagnetic interactions by the partial replacement of Zn2+ ions with Cu2+ ions in lead-free zinc-based perovskite (MA)2ZnCl4 crystal by MAS NMR

open access: yesAIP Advances, 2019
The growths, structures, phase transition temperatures, and molecular dynamics of mixed (MA)2Zn1-xCuxCl4 (x=0, 0.3, 0.5, 0.7, and 1) crystals were investigated to understand the effect of the random presence of paramagnetic Cu2+.
Ae Ran Lim
doaj   +1 more source

Two‐dimensional In2Se3: A rising advanced material for ferroelectric data storage

open access: yesInfoMat, 2022
Ferroelectric memory is a promising candidate for next‐generation nonvolatile memory owing to its outstanding performance such as low power consumption, fast speed, and high endurance. However, the ferroelectricity of conventional ferroelectric materials
Yu‐Ting Huang   +6 more
doaj   +1 more source

Ferroelectric behavior and spectroscopic properties of La-Modified lead titanate nanoparticles prepared by a sol-gel method

open access: yesHeliyon, 2020
The sol-gel method was used to prepare perovskite type (Pb1-1.5x Lax□0.5x)TiO3 (PLT) ceramics with x = 0.21, 0.22, 0.23, 0.24, 0.25 in order to investigate their structural, optical, and dielectric properties.
M. Mostafa   +3 more
doaj   +1 more source

Effect of magnetic field and temperature on the ferroelectric loop in MnWO4

open access: yes, 2008
The ferroelectric properties of MnWO4 single crystal have been investigated. Despite a relatively low remanent polarization, we show that the sample is ferroelectric.
B. Jaffe   +4 more
core   +2 more sources

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