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Limiting losses in dielectrics
IEEE Transactions on Dielectrics and Electrical Insulation, 2001Examination of a wide range of experimental data relating to 'low-loss' dielectric materials reveals the little acknowledged fact that their loss at high frequencies (kHz to GHz) and low temperatures (typically 100 to 200 K) is weakly or very weakly dependent on frequency, what we call 'flat loss', and is likewise weakly dependent on temperature ...
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Dielectric nanocomposite with high dielectric permittivity and low dielectric loss
2015 IEEE Electrical Insulation Conference (EIC), 2015Dielectric flexible nanocomposites featuring ferroelectric barium titanate nanoparticles embedded in poly(vinylidene fluoride) (PVDF) matrix were fabricated by a miscible-immiscible coagulation method followed by hot pressing. The SEM images showed good distribution of nanoparticles with very little particle agglomeration.
Youngho Jin +2 more
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The quadrant electrometer for the measurement of dielectric loss
Journal of the A.I.E.E., 1924Walker, Skinner, Addenbrooke, Rayner, Orlich, Schultze, Thielers and others* have given a great amount of useful information on electrometers for the measurement of dielectric loss. We have found instruments made somewhat after the design of Skinner and Rayner, so rugged, and so useful as laboratory instruments, even when the instrument is subjected to
D. M. Simons, W. S. Brown
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Journal of Materials Science, 1999
Low-loss dielectrics are important technologically as insulators but there is little understanding of the physical causes of this property and even their spectral response is not well documented—this study has revealed a number of different types of behaviour which do not appear to have been recognised previously. Most low-loss materials show a “flat”,
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Low-loss dielectrics are important technologically as insulators but there is little understanding of the physical causes of this property and even their spectral response is not well documented—this study has revealed a number of different types of behaviour which do not appear to have been recognised previously. Most low-loss materials show a “flat”,
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Dielectric Loss Mechanism in Rutile (TiO2)
Journal of Applied Physics, 1972A new mechanism to account for the anomalously large dielectric loss and apparent dielectric constant frequently observed in TiO2 is presented, which appears to agree well with experiment. The mechanism involves field-induced donor migration where the field arises from a difference in work function between the rutile and a metal electrode.
Johnson, O. W. +2 more
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1983
Efficient utilization of electrical insulating materials in electrical apparatus, devices, and cables requires knowledge of the dielectric loss behavior of materials under specific voltage, frequency, and temperature conditions. The appearance of significant dielectric losses may not only represent an unnecessary energy loss but could possibly lead to ...
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Efficient utilization of electrical insulating materials in electrical apparatus, devices, and cables requires knowledge of the dielectric loss behavior of materials under specific voltage, frequency, and temperature conditions. The appearance of significant dielectric losses may not only represent an unnecessary energy loss but could possibly lead to ...
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Dielectric Polarization and Loss
Annual Review of Physical Chemistry, 1960The subject of dielectric behavior has not previously been dealt with as such in these reviews, although dielectric properties relevant to other sub jects have often been mentioned. There have, however, been a number of comparatively recent books and review articles on various aspects of di electrics.
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1967
In alternating electric fields, a dielectric material is frequently characterized by its dielectric loss, which depends on the fraction of electrical energy lost to heat, rather than by its electrical conductivity. The energy loss occurs as the result of two processes: conduction and slow polarization currents.
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In alternating electric fields, a dielectric material is frequently characterized by its dielectric loss, which depends on the fraction of electrical energy lost to heat, rather than by its electrical conductivity. The energy loss occurs as the result of two processes: conduction and slow polarization currents.
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Losses at corner bends in dielectric waveguides
Applied Optics, 1977An approximate technique based on a sum rule is used to treat mode conversion at corner bends in dielectric waveguides. Matrix elements which describe the mode coupling are expressed as spatial integrals over electromagnetic field distributions for the guided modes.
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Dielectric Loss Mechanism in Electromagnetic Wave Absorbing Materials
Advanced Science, 2022Limin Zhang, Wu Hongjing, Ming Qin
exaly