Results 21 to 30 of about 59,401 (264)

Temperature Distribution in the Insulation System of Condenser-Type HV Bushing—Its Effect on Dielectric Response in the Frequency Domain

open access: yesEnergies, 2021
HV bushings are an important part of the equipment of large power transformers, responsible for their many serious (including catastrophic) failures. Their proper exploitation needs to apply correct and reliable diagnostics, e.g., the use of dielectric ...
Krzysztof Walczak, Jaroslaw Gielniak
doaj   +1 more source

Study of dielectric behavior and electrical properties of hematite α-Fe2O3 doped with Zn [PDF]

open access: yesScience of Sintering, 2012
The effects of Zn-doping on the dielectric behavior and electrical properties of bulk α-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel ...
Nikolic M.V.   +8 more
doaj   +1 more source

Dielectric Response of Silica Aerogels [PDF]

open access: yesDefect and Diffusion Forum, 1987
The dielectric response of porous silica aerogel prepared by hypercritical drying of gels from hydrolysis of TMOS — Methanol solution have been measured between 1.6 K to 300 K and frequencies between 50 and 10 5 Hz. The ɛ' value of the porous gels is found practically constant between room temperature and 100K but smaller than of fused silica. A sharp
Da Silva, Adao A.   +2 more
openaire   +1 more source

Barium titanate/polydimethylsiloxane nano/microcomposites fabrication, morphology, dielectric response and functionality

open access: yesIET Nanodielectrics, 2020
Polymer matrix composites with embedded ferroelectric and/or piezoelectric particles, constitute a novel and interesting class of engineering materials. The incorporation of ferroelectric and/or piezoelectric particles within a polymer matrix is expected
Anastasios C. Patsidis
doaj   +1 more source

Broadband dielectric response of AlN ceramic composites [PDF]

open access: yesProcessing and Application of Ceramics, 2014
Aluminium nitride (AlN) is considered as a substrate material for microelectronic applications. AlN ceramic composites with different amount of TiO2 (up to 4 vol.%) were obtained using hot pressing at different sintering temperature from 1700 to 1900 °C ...
Iryna V. Brodnikovska   +2 more
doaj   +1 more source

A Parameterization Approach for the Dielectric Response Model of Oil Paper Insulation Using FDS Measurements

open access: yesEnergies, 2018
To facilitate better interpretation of dielectric response measurements—thereby directing numerical evidence for condition assessments of oil-paper-insulated equipment in high-voltage alternating current (HVAC) transmission systems—a novel approach is ...
Feng Yang   +6 more
doaj   +1 more source

The effect of processing conditions on the dielectric properties of doped calcium lanthanum nickelate

open access: yesChimica Techno Acta, 2022
The influence of thermal and thermobaric (TBT) effects on the structure, microstructure, and dielectric properties of ceramics based on solid solutions of the La1.8Ca0.2Ni0.8M0.2O4+δ (M = Co, Cu) composition was studied.
Yulia A. Deeva   +5 more
doaj   +1 more source

Dielectric relaxation and current conduction mechanism of Tb and Mn codoped bismuth ferrite grafted poly (vinyl alcohol) nanocomposite film

open access: yesReviews on Advanced Materials Science, 2020
Investigation on current conduction mechanism through Tb and Mn codoped Bismuth Ferrite grafted polyvinyl alcohol (BTFMO-PVA) nanocomposite film above room temperature (300 K – 415 K) is reported here in detail.
Halder Monalisa, Meikap Ajit Kumar
doaj   +1 more source

Anomalous dielectric response of nanoconfined water [PDF]

open access: yesThe Journal of Chemical Physics, 2021
In order to develop a microscopic level understanding of the anomalous dielectric properties of nanoconfined water (NCW), we study and compare three different systems, namely, (i) NCW between parallel graphene sheets (NCW–GSs), (ii) NCW inside graphene covered nanosphere (NCW–Sph), and (iii) a collection of one- and two-dimensional constrained Ising ...
Sayantan Mondal, Biman Bagchi
openaire   +2 more sources

Crystal Structure and Phase Transition of the C–H···F–H-Bonded Supramolecular Compound with 4-Nitroanilinium Based on 18-Crown-6

open access: yesCrystals, 2017
A novel inorganic-organic hybrid supramolecular macrocyclic compound, (4-nitroanilinium)(18-crown-6)(PF6)(1), was synthesized and characterized by infrared spectroscopy, thermogravimetric analysis, elemental analysis, differential scanning calorimetry ...
Chun-li Zhu   +4 more
doaj   +1 more source

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