Results 11 to 20 of about 124,337 (347)

Synthesis and characterization of manganese ferrite from low grade manganese ore through solid state reaction route

open access: yesScientific Reports, 2021
Manganese ferrite spinel has been synthesized by using low grade manganese ore and ferric oxide as sources of manganese oxide and iron oxide through solid state reaction route by taking manganese and iron mole ratio of 1:2 respectively.
Salar Ahmad   +5 more
doaj   +1 more source

CaCu3Ti4O12 ceramics from co-precipitation method: Dielectric properties of pellets and thick films [PDF]

open access: yes, 2009
Dielectric properties of CaCu3Ti4O12 (CCTO)-based ceramics and thick films (e ∼50m) prepared from powders synthesized by a soft chemistry method (co-precipitation) are presented and discussed.
Barbier, Bertrand   +7 more
core   +3 more sources

Significant enhancement of dielectric properties in polyimides with sulfonyl groups in the side chains

open access: yesIET Nanodielectrics, 2023
Polymer dielectrics with excellent thermal resistance and superior energy storage behaviour are extensively demanded with the increasing development of film capacitors applied in hostile environments. In this study, novel diamine with sulfonyl‐containing
Jinpeng Luo   +4 more
doaj   +1 more source

Study on water absorption and dielectric response of epoxy resin impregnated paper bushing

open access: yesIET Generation, Transmission & Distribution, 2023
Epoxy‐impregnated paper transformer bushings are prone to water absorption due to the presence of water‐attracting moieties in the cellulose chemical structure and epoxy resin, leading to moisture‐induced insulation defects.
Daning Zhang   +6 more
doaj   +1 more source

Irregularities in a metal-dielectric shielded waveguide with low losses for the frequency range 90–100 GHz

open access: yesФизика волновых процессов и радиотехнические системы, 2022
This article is devoted to the study of waveguide metal-dielectric structures in the frequency range of 90100 GHz with low losses up to 0,05 dB/m. The paper considers the effect of sharp irregularities on a section of a regular line, which leads to a ...
Vladislav V. Krutskikh   +4 more
doaj   +1 more source

Dielectric constant and losses in a magnetic field in RexMn1-xS solid solutions (Re = Gd, Yb) [PDF]

open access: yesE3S Web of Conferences
Polycrystalline samples GdxMn1-xS and YbxMn1-xS with a concentration x = 0.2, near the ions percolation concentration through the face-centered cubic lattice, are studied in order to determine fluctuations in the valence of the ytterbium ion on ...
Kharkov A. M.   +4 more
doaj   +1 more source

iGSE-CD—An Electric-/Displacement-Field Related Steinmetz Model for Class II Multilayer Ceramic Capacitors Under Low-Frequency Large-Signal Excitation

open access: yesIEEE Open Journal of Power Electronics, 2023
Multilayer Ceramic Capacitors (MLCCs) are of paramount importance in electronics and ferroelectric Class II dielectrics enable outstanding energy-density values.
David Menzi   +6 more
doaj   +1 more source

Controlling internal barrier in low loss BaTiO3 supercapacitors [PDF]

open access: yes, 2009
Supercapacitor behavior has been reported in a number of oxides including reduced BaTiO3 ferroelectric ceramics. These so-called giant properties are however not easily controlled. We show here that the continuous coating of individual BaTiO3 grains by a
C. Elissalde   +6 more
core   +4 more sources

Dielectric-induced surface wave radiation loss [PDF]

open access: yesProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2020
We investigate a model which shows how the introduction of a perturbing dielectric close to an electromagnetic surface wave leads to radiation away from the surface through the dielectric. This resembles a surface waveguide passing through a wall or being deployed underground.
Schaich, Tobias   +3 more
openaire   +3 more sources

Field quantization in inhomogeneous absorptive dielectrics [PDF]

open access: yes, 2004
The quantization of the electromagnetic field in a three-dimensional inhomogeneous dielectric medium with losses is carried out in the framework of a damped-polariton model with an arbitrary spatial dependence of its parameters.
A. Bechler   +4 more
core   +5 more sources

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