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1983 EIC 6th Electrical/Electronical Insulation Conference, 1983
Substitution of magnetic ions in some semiconducting alloys produces materials with interesting properties having high potential for device applications. On the other hand, substitution of specific ions in magnetic materials produces p- or n-type semiconducting properties.
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Substitution of magnetic ions in some semiconducting alloys produces materials with interesting properties having high potential for device applications. On the other hand, substitution of specific ions in magnetic materials produces p- or n-type semiconducting properties.
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Magnetic losses in soft magnetic materials
2015Soft magnetic materials are important in modern networks used for the distribution of electrical energy. They are part of transformers and generators as core material for example. The efficiency of those transformers and generators is among other things limited by the fact that energy has to be used to change the magnetization of the material.
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How Accurate are Magnetic Loss Measurements?
2024 IEEE International Magnetic Conference - Short papers (INTERMAG Short papers)Intermag 2024 Presentation: DF: Soft Magnetic Alloys: Materials and ...
Massimo Pasquale +12 more
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Critical behaviour of magnetic losses
Physica Status Solidi (a), 1974The critical exponent γ of the complex susceptibility χ = χ′ – iχ″ was measured in the temperature range 5 × 10−5 ≦ ϵ = |T – Tc|Tc ≦ 10−2 at frequencies between 0.1 and 20 kHz in a field of 5 mOe for very pure polycrystalline nickel. For the real part at zero frequency χ′(0) = χo(0)ϵ–γ and T > Tc γ = 1.41 ± 0.02 is obtained and χ′o(0) = (3.4 ± 0.8 ...
N. Herzum, K. Stierstadt, L. Wunsch
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Magnetic Losses at Low Temperatures
Journal of Applied Physics, 1959The total magnetic losses in a silicon steel transformer core have been measured at temperatures from 20° to 273°K using a variable-frequency simple-harmonic flux wave with magnetic field intensity amplitudes Bm from 2 to 10 kilogauss. The hysteresis, or frequency independent, part of the losses was obtained by graphical extrapolation.
E. H. Brown, J. R. Brennand
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Loss estimation of magnetic gears
Electrical Engineering, 2019Reduction in losses is essential for the efficiency enhancement of magnetic gears. In this paper, the power losses of a coaxial magnetic gear are estimated, based on a developed convenient approach for loss analysis using a time-dependent finite element model.
Valentin Mateev, Iliana Marinova
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Magnetization Noise and Power Loss in Magnetic Materials
1978Magnetization noise originates in a ferromagnet when Bloch walls are irreversibly displaced under the action of an applied field. The voltage noi se detected in a winding linked to the specimen is called Barkhausen noise, and, since its discovery, it has been widely studied in several types of ferromagnetic materials under various physical conditions ...
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Temperature Dependence of Magnetic Losses
1962The rapidly increasing use of electric motors, transformers, and other electrical equipment operating at cryogenic temperatures has created an urgent need for engineering data on the low-temperature magnetic losses of ferromagnetic materials. Unfortunately, such data have been very scarce. Therefore, a research program in this field was begun under the
J. J. Gniewek, R. L. Powell
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Formulas for magnetic hysteresis losses
Electrical Engineering, 1933This article describes an investigation to determine the magnetic properties of different grades of silicon sheet steel when symmetrically and unsymmetrically magnetized; from the results a formula has been derived which should be of value in designing electrical apparatus used in circuits where alternating and direct currents are superposed.
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Magnetic loss in soft ferrites
Journal of Applied Physics, 2007In order to understand the anomalous magnetic field dependence of the high frequency (200kHz–1.0MHz) losses, we consider the high field conductivity of the soft ferrites. We show that the high field conductivity is highly nonlinear. Separately, we show that this nonlinear behavior is due to tunneling between adjacent ferrite grains.
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