Studies were made of the influence of the permeability of a magnetic conductor made of cast iron (3.2% carbon) and steel (0.2% carbon) on the efficiency of strong-field electromagnets. The permeability was modified within the range 1000-5000 via thermal treatment of the metal in the ...
Evaluation of electrical conductivity and magnetic permeability variations with depth from surface voltage measurementsMeasurements of alternating current potential drop at the surface of a conductor can be predicted based on knowledge of the electromagnetic material properties of the conductor and their ...
Magnetic permeability of a diphasic flow, made of liquid gallium and iron beads. Eur. Phys. J. B 18, 337–341 (2000). Article Google Scholar Pankhurst, Q. A., Connolly, J., Jones, S. K. & Dobson, J. Applications of magnetic nanoparticles in biomedicine. J. Phys. D 36, R167–...
where x is the relative distance between magnets, μ0 is the permeability of free space (4 π·10− 7 N/A2), M is the magnetization, and r and t are the radius and the height of cylinders, respectively. Diamagnetic levitation is the working principle of the second type of magnetic su...
MME fibers can be actuated by the external magnetic field due to the magnetization of NdFeB particles distributed in the sheath. Figure 3a shows the excellent ferromagnetic properties of a magnetic sheath with the residual magnetization Mr, coercivity Hc, and relative permeability of 34 emu/g, ...
intrinsic permeabilityargillaceous rockAn analytic theory is developed for the diagonal conductivity $\\sigma_{xx}$of a 2D conductor which takes account of the localized states in the broadenLandau levels. In the low-field region $\\sigma_{xx}$ display the Shubnikov-deHaas oscillations which in...
Magnetic permeability, change in the resultant magnetic field inside a material compared with the magnetizing field in which the given material is located. or the magnetic flux density B established within the material divided by the magnetic field stren
In this equation, μ0is thepermeabilityof free space and has thevalueof 4π × 10−7newtonper squareampere. This equation is illustrated inFigure 2for a small segment of a wire that carries a current so that, at the origin of thecoordinate system, the small segment of lengthdlof the ...
The equations above show that the skin depth (δ) depends on the frequency of the audio signal, as well as the conductivity and magnetic permeability of the conductor. The vast majority of electrically conducting wire is made of copper, for which the above formulas yield a skin depth of appr...
United States Patent US4964738 Note: If you have problems viewing the PDF, please make sure you have the latest version of Adobe Acrobat. Back to full textHome Search Services Contact us © 2004-2024 FreePatentsOnline.com. All rights reserved. Privacy Policy & Terms of Use....