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Effect of grooves on magnetization reversal in amorphous TbFeCo thin films

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4 Author(s)
Gadetsky, S. ; Opt. Sci. Center, Arizona Univ., Tucson, AZ, USA ; Suzuki, T. ; Erwin, J.K. ; Mansuripur, M.

We have investigated the effect of grooves milled by argon ions in soda lime glass substrates on the magnetic behavior of amorphous TbFeCo films deposited onto these substrates. The domains are shown to expand along the grooves when the groove depth exceeds 10 nm. The effect originates from the difference in the coercivities of the film on the land and on the groove, as well as from the pinning of domain walls by the side-walls of the grooves

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Magnetics, IEEE Transactions on  (Volume:30 ,  Issue: 6 )