Results 41 to 50 of about 4,512,564 (394)

Complex Permittivity Measurement System for Solid Materials Using Complementary Frequency Selective Surfaces

open access: yesIEEE Access, 2020
This paper describes a novel method of characterizing complex permittivity using a complementary frequency selective surface (CFSS). The CFSS provides a passband behavior and the change in the passband when a material under test (MUT) is placed adjacent ...
Chih-Kuo Lee   +5 more
doaj   +1 more source

Barium Titanate/Gadolinium Ferrite: A New Material Composite to Store Energy

open access: yesNanomaterials, 2023
This work investigates the dielectric properties of barium titanate/gadolinium ferrite ceramic composites, with different concentrations of each material.
Clara Baivier   +4 more
doaj   +1 more source

Dielectric Losses of Microwave Ceramics Based on Crystal Structure

open access: yesElectromagnetic Materials and Devices, 2018
So far, many microwave dielectric materials have been investigated for a range of telecommunication applications. In dielectrics, the three main dielectric properties are quality factor ( Q ), dielectric constant and temperature coefficient of resonant ...
H. Ohsato, J. Varghese, H. Jantunen
semanticscholar   +1 more source

High-Q trenched aluminum coplanar resonators with an ultrasonic edge microcutting for superconducting quantum devices

open access: yesScientific Reports, 2023
Dielectric losses are one of the key factors limiting the coherence of superconducting qubits. The impact of materials and fabrication steps on dielectric losses can be evaluated using coplanar waveguide (CPW) microwave resonators.
E. V. Zikiy   +9 more
doaj   +1 more source

Tailoring Dielectric Properties of Multilayer Composites Using Spark Plasma Sintering [PDF]

open access: yes, 2007
A straightforward and simple way to produce well-densified ferroelectric ceramic composites with a full control of both architecture and properties using spark plasma sintering (SPS) is proposed. SPS main outcome is indeed to obtain high densification at
Anselmi-Tamburini U.   +6 more
core   +2 more sources

Electromagnetic Absorbers based on High-Impedance Surfaces: From ultra-narrowband to ultra-wideband absorption

open access: yesAdvanced Electromagnetics, 2012
Different electrically-thin absorbing designs based on  High-Impedance Surfaces (HIS) are presented and classified on the basis of the nature of loss. HIS structures allow achieving absorption by exploiting either dielectric or ohmic (resistive) losses ...
F. Costa, A. Monorchio
doaj   +1 more source

Static dielectric constant and dielectric loss of cellulose insulation: Molecular dynamics simulations

open access: yesHigh Voltage, 2021
Reducing the dielectric constant and loss of cellulose insulation can make the electric field distribution uniform in oil‐paper insulation systems and decrease the heat generation in dielectric materials, thus ensuring a reliable transformer operation ...
Wei Hou   +5 more
doaj   +1 more source

CaZn1/3Nb2/3O3-based dielectric ceramics for silver co-sintering applications [PDF]

open access: yesScience of Sintering, 2012
The Ca(Zn1/3Nb2/3)O3 (CZN) complex perovskite oxide has been studied for its attractive dielectric properties (εr=34, Qxf=15 890GHz, τf=-48 ppm.°C-1) for applications such as multilayer ceramics capacitors or hyperfrequency resonators.
Chaouchi A.   +3 more
doaj   +1 more source

Full-wave electromagnetic modes and hybridization in nanoparticle dimers [PDF]

open access: yes, 2019
The plasmon hybridization theory is based on a quasi-electrostatic approximation of the Maxwell’s equations. It does not take into account magnetic interactions, retardation effects, and radiation losses. Magnetic interactions play a dominant role in the
Forestiere, C.   +3 more
core   +4 more sources

Magnetic field tuning of polaron losses in Fe doped BaTiO3 single crystals

open access: yes, 2012
Artificial tuning of dielectric parameters can result from interface conductivity in polycrystalline materials. In ferroelectric single crystals, it was already shown that ferroelectric domain walls can be the source of such artificial coupling.
Artemenko, Alla   +2 more
core   +3 more sources

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