Contribution of the easy axis orientation, anisotropy distribution and dot size on the switching field distribution of bit patterned media

Contribution of the easy axis orientation, anisotropy distribution and dot size on the switching field distribution of bit patterned media

A magnetic nanostructure array was fabricated by post-patterning of a L1 0 ordered 5-nm-thick FePtCu film revealing a rather broad switching field distribution (SFD). The individual contributions to the SFD of the dot array were investigated by micromagnetic simulations. Based on transmission electr...

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Veröffentlicht in:Applied physics letters 2011-08, Vol.99 (6), p.062505-062505-3
Hauptverfasser: Lee, Jehyun, Brombacher, Christoph, Fidler, Josef, Dymerska, Barbara, Suess, Dieter, Albrecht, Manfred
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container_title Applied physics letters
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creator Lee, Jehyun
Brombacher, Christoph
Fidler, Josef
Dymerska, Barbara
Suess, Dieter
Albrecht, Manfred
description A magnetic nanostructure array was fabricated by post-patterning of a L1 0 ordered 5-nm-thick FePtCu film revealing a rather broad switching field distribution (SFD). The individual contributions to the SFD of the dot array were investigated by micromagnetic simulations. Based on transmission electron microscopy results, the dots show a truncated cone shape which was directly used for the finite element model. The influence of single parameters, i.e., easy axis distribution, magnetic anisotropy, and dot size, on the SFD was estimated quantitatively and compared. Furthermore, the influence of damage induced during the nanofabrication process was analyzed and correlated with experimental results.
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title Contribution of the easy axis orientation, anisotropy distribution and dot size on the switching field distribution of bit patterned media
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