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Optimum permanent-magnet dimensions for repulsion applications

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3 Author(s)
Cooper, R.K. ; California State University, Hayward, Calif ; Neil, V.Kelvin ; Woodruff, W.

The repulsive force between identical right-circular-cylindrical permanent magnets is calculated, and the ratio of this force to the weight of a magnet is maximized through optimization of magnet size and shape. It is assumed that the magnets are uniformly magnetized along their axes. For magnets of thicknesstand radiusR, separated by a distance2h, the optimum dimensions areR = 3.45handt = 2.7h. For these dimensions, the repulsive magnetic force has the value2.65 mu_{0}M^{2}h^{2}newtons, with the magnetizationMin At/m andhin meters.

Published in:

Magnetics, IEEE Transactions on  (Volume:9 ,  Issue: 2 )

Date of Publication:

Jun 1973

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