Title :
Influence of Notch Shape and Size on Current-Driven Domain Wall Motions in a Magnetic Nanowire
Author :
Komine, Takashi ; Murakami, Hiroshi ; Nagayama, Takahiro ; Sugita, Ryuji
Author_Institution :
Dept. of Media & Telecommun. Eng., Ibaraki Univ., Hitachi
Abstract :
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.
Keywords :
critical currents; magnetic domain walls; magnetic fields; magnetic transitions; magnetisation; micromagnetics; nanowires; critical current density; critical field; current-driven domain wall motions; magnetic fields; magnetic nanowire; magnetization distributions; micromagnetic simulation; notch shape; notch size; phase diagram; Current-induced domain wall motion; nanowire; notch; phase diagram;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2008.2002614
