Results 1 to 10 of about 59,401 (264)

Development of a Moisture-in-Solid-Insulation Sensor for Power Transformers

open access: yesSensors, 2015
Moisture is an important variable that must be kept under control to guarantee a safe operation of power transformers. Because of the hydrophilic character of cellulose, water mainly remains in the solid insulation, while just a few parts per million are
Belén García   +2 more
doaj   +1 more source

Dielectric spectroscopy of epoxy-based barium titanate nanocomposites: effect of temperature and humidity

open access: yesIET Nanodielectrics, 2020
The information contained in the dielectric response of materials is useful to study the charge transport behaviour of dielectric materials at the molecular level.
Romana Zafar, Nandini Gupta
doaj   +1 more source

Dielectric response and tunability of a dielectric-paraelectric composite

open access: yesApplied Physics Letters, 2008
A theoretical study was carried out to determine the dielectric response and tunability of a composite consisting of a linear, low-loss dielectric matrix with uniformly sized, randomly distributed paraelectric Ba0.60Sr0.40TiO3 (BST 60/40) particles as functions of the volume fraction and size of the particles.
K. Zhou   +5 more
openaire   +3 more sources

AC Impedance Spectroscopy, Conductivity and Optical Studies of Sr doped Bismuth Ferrite Nanocomposites

open access: yesInternational Journal of Electrochemical Science, 2016
Effect of Sr doping on the structural, optical, dielectric, impedance properties of citrate combustion reaction route prepared Bi1-xSrxFeO3 (BSFO) nanocomposite has been investigated.
Baljinder Kaur   +5 more
doaj   +1 more source

Influence of xylene on the dielectric response of an organoclay-containing nanocomposite

open access: yesIET Nanodielectrics, 2020
The dielectric effect, investigated using dielectric spectroscopy and DC dielectric breakdown strength measurements, of introducing xylene into a composite system containing polyethylene, a co-polymer of ethylene and vinyl acetate and an organoclay can ...
Allison V. Shaw   +3 more
doaj   +1 more source

Complex dielectric modulus and relaxation response at low microwave frequency region of dielectric ceramic Ba6-3xNd8+2xTi18O54 [PDF]

open access: yesJournal of Advanced Dielectrics, 2014
The desirable characteristics of Ba6-3xNd8+2xTi18O54 include high dielectric constant, low loss tangent, and high quality factor developed a new field for electronic applications.
Chian Heng Lee   +4 more
doaj   +1 more source

How to Recognize the Universal Aspects of Mott Criticality?

open access: yesCrystals, 2022
In this paper we critically discuss several examples of two-dimensional electronic systems displaying interaction-driven metal-insulator transitions of the Mott (or Wigner–Mott) type, including dilute two-dimension electron gases (2DEG) in semiconductors,
Yuting Tan   +2 more
doaj   +1 more source

THE DIELECTRIC RESPONSE OF CRYSTALS

open access: yesLe Journal de Physique Colloques, 1972
By properly considering the coupling of the ferroelectric fluctuations to the low frequency fluctuations in the phonon density of a piezoelectric crystal, a new contribution to the phonon self-energy is obtained. It is suggested that this terms accounts for the anomalous temperature dependence of the relaxation time of the ferroelectric mode that has ...
Coombs, G., Cowley, R.
openaire   +2 more sources

Determination of the Primary Excitation Spectra in XPS and AES

open access: yesNanomaterials, 2023
This paper reviews a procedure that allows for extracting primary photoelectron or Auger electron emissions from homogeneous isotropic samples. It is based on a quantitative dielectric description of the energy losses of swift electrons travelling nearby
Nicolas Pauly   +2 more
doaj   +1 more source

On Static Dielectric Response of Microcomposites of the Type: Ferrolastics-Dielectrics

open access: yes, 2005
We describe the static dielectric response of ferroelastic-dielectric microcomposites. Its dependence on temperature, pressure and concentration is considered for smaller concentrations and for temperatures above the critical temperature. We have found a qualitative agreement with existing experimental data for $Al_{2}(WO_{4})_{3}$.
Hudak, O., Schranz, W.
openaire   +2 more sources

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