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Calculation of intrinsic coercivity of magnetic domain walls in perfect crystals

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2 Author(s)
van den Broek, J. ; Philips Research Laboratories, N.V. Philips'' Gloeilampenfabrieken, Enidhoven, The Netherlands. ; Zijlstra, H.

The critical field strength at which a classical domain wall moves through a perfect ferromagnetic crystal of simplified structure is calculated as a function of the ratio between anisotropy energy K and ferromagnetic coupling energy C , taking into account the discrete nature of the spins. When K approaches C intrinsic wall pinning becomes appreciable with critical fields approaching the anisotropy field when K \gg C . For K/C \geq 2/3 , the wall has a thickness of one atomic distance and thus resembles a ferroelectric wall.

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Magnetics, IEEE Transactions on  (Volume:7 ,  Issue: 2 )