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Influence of Notch Shape and Size on Current-Driven Domain Wall Motions in a Magnetic Nanowire

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4 Author(s)
Komine, Takashi ; Dept. of Media & Telecommun. Eng., Ibaraki Univ., Hitachi ; Murakami, H. ; Nagayama, T. ; Sugita, Ryuji

In this study, the influence of triangle and rectangle notches with various sizes on current-induced domain wall motion has been investigated by utilizing micromagnetic simulation. Each notch plays a role in wall pinning, and the effect of wall pinning increases as the notch size increases. The phase diagram in a critical current density and a critical field for the notch shape is clarified. There are four modes in domain wall depinning by various current densities and magnetic fields.

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Magnetics, IEEE Transactions on  (Volume:44 ,  Issue: 11 )