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Magnetization processes in single-layer and laminated CoFe films patterned into multiscale elements with write-head-like geometries

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6 Author(s)
Kong, X. ; Department of Physics & Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom ; McVitie, S. ; Chapman, J.N. ; Weaver, J.M.R.
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Lorentz microscopy has been used to study the micromagnetic processes occurring during the reversal of multiscale single and multilayer CoFe elements. The elements, which have similar dimensions to write heads used in magnetic recording, typically have length scales varying from 10 μm in the element “core” down to 100 nm in the element “tip.” Marked differences both in the core and the tip regions are observed between single and multilayer elements. The results demonstrate clearly how the role played by shape anisotropy in complex elements can be effectively reduced by multilayering, allowing any anisotropy induced in the film during deposition to play a greater role in defining the resulting behavior.

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Journal of Applied Physics  (Volume:104 ,  Issue: 1 )