Paterson, J H and Cooke, S J and Phelps, A D R (1998) Finite-difference calculation of demagnetizing factors for shapes with cylindrical symmetry. Journal of Magnetism and Magnetic Materials, 177-181. pp. 1472-1473. ISSN 0304-8853Full text not available in this repository. (Request a copy from the Strathclyde author)
The effect of the demagnetizing field plays an important part in determining the response to applied magnetic fields of samples which form incomplete magnetic circuits. The demagnetizing factor N is usually calculated using a surface magnetic charge model to deduce the demagnetizing held, In this work, a finite-difference method is used to calculate the flux density for a given applied field. The effective permeability mu(rod) is then deduced. N is calculated by comparing mu(rod) with mu(r), the intrinsic permeability of the material. Calculations for cylinders and ellipsoids give very good agreement with surface charge methods. Advantages of this approach include ease of application to more complex shapes and the potential for application to non-linear materials.
|Keywords:||demagnetization, magnetostatics, finite difference, permeability, non-linear magnetics, Plasma physics. Ionized gases, Condensed Matter Physics|
|Subjects:||Science > Physics > Plasma physics. Ionized gases|
|Department:||Faculty of Science > Physics|
|Depositing user:||Pure Administrator|
|Date Deposited:||07 Nov 2011 13:29|
|Last modified:||04 May 2016 20:43|