Results 51 to 60 of about 1,697 (260)

Enhanced photocatalytic activity and cycle stability driven by ultrasonic vibration for ferroelectric photocatalysts

open access: yesIET Nanodielectrics, 2019
Ferroelectric materials have been applied in the photocatalytic field due to the internal electric field generated by the spontaneous polarisation. In this study, it is found that the ferroelectric BaTiO(3) catalysts exhibit the excellent photocatalytic ...
Xiaoshan Zhang   +8 more
doaj   +1 more source

Dielectric characterisation of epoxy nanocomposite with barium titanate fillers

open access: yesIET Nanodielectrics, 2020
High permittivity materials are currently in use for mitigation of electrical stress in high-voltage apparatus and energy storage systems. In this work, epoxy-based high permittivity nanocomposites with Barium titanate (BaTiO(3)) nanofillers are ...
Romana Zafar, Nandini Gupta
doaj   +1 more source

Three‐Dimensional Anomalous Hall Sensing Enabled By Spin–Orbit Torque Driven Domain Reconfiguration In Chiral Multilayers

open access: yesAdvanced Functional Materials, EarlyView.
A three‐dimensional magnetic field sensor is realized in chiral W/CoFeB/MgO multilayers, where spin–orbit torques reversibly reconfigure homochiral stripe domains. The symmetry of the torque enables offset‐free in‐plane sensing, while the reproducible domain reconfiguration extends the linear out‐of‐plane range. An anomalous Hall readout delivers large‐
Sabri Koraltan   +16 more
wiley   +1 more source

Conversion of Dielectric Data from the Time Domain to the Frequency Domain

open access: yesAdvances in Electrical and Electronic Engineering, 2005
Polarisation and conduction processes in dielectric systems can be identified by the time domain or the frequency domain measurements. If the systems is a linear one, the results of the time domain measurements can be transformed into the frequency ...
Vladimir Durman, Jaroslav Lelak
doaj  

Highly dispersive Ba(0.6)Sr(0.4)TiO(3) nanoparticles modified P(VDF-HFP)/PMMA composite films with improved energy storage density and efficiency

open access: yesIET Nanodielectrics, 2018
Polymer composite films with high energy density as well as high efficiency are promising dielectric materials in pulsed power systems. In improving the energy discharged efficiency, poly vinylidene fluoride-hexafluoropropylene [P(VDF-HFP)] film blended ...
Zunpeng Feng   +4 more
doaj   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand   +13 more
wiley   +1 more source

Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene

open access: yesAdvanced Functional Materials, EarlyView.
Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus   +8 more
wiley   +1 more source

3D‐printed heterogeneous isotropic–anisotropic dielectric resonator for singly fed dual‐band circularly polarised antennas

open access: yesIET Microwaves, Antennas & Propagation
The design of three‐dimensional (3D)‐printed heterogeneous ceramics exhibiting isotropic and anisotropic dielectric permittivities at microwave frequencies is studied for dielectric resonator antenna (DRA) applications.
Bruno deAraùjo   +5 more
doaj   +1 more source

STUDIES ON THE DIELECTRIC POLARISATION AND THE DIPOLE MOMENTS OF ENANTIOMERS

open access: yes, 1948
Dielectric poIarisations and dipole momenta of \(d\), \(d\) and \(dl\) forms of camphor borneol and menthol at different concentrations have been determined to addnce support for the Pasteur's principle of molecular dissymmetry and to investigate the nature of linkage in \(dl ...
ROOP CHAND SAHNEY   +2 more
openaire   +2 more sources

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg   +6 more
wiley   +1 more source

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