TY - JOUR
T1 - Domain nucleation and annihilation in uniformly magnetized state under current pulses in narrow ferromagnetic wires
AU - Togawa, Yoshihiko
AU - Kimura, Takashi
AU - Harada, Ken
AU - Akashi, Tetsuya
AU - Matsuda, Tsuyoshi
AU - Tonomura, Akira
AU - Otani, Yoshichika
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006/12
Y1 - 2006/12
N2 - We investigate the current-driven magnetization dynamics in narrow Permalloy wires by means of Lorentz microscopy and electron holography. Current pulses are found to transform the magnetic structure in the uniformly magnetized state below the Curie temperature. A variety of magnetic states including reversed magnetic domains are randomly obtained in low probability. The dynamics of vortices found in most of observed magnetic states seems to play a key role in triggering the magnetization reversal.
AB - We investigate the current-driven magnetization dynamics in narrow Permalloy wires by means of Lorentz microscopy and electron holography. Current pulses are found to transform the magnetic structure in the uniformly magnetized state below the Curie temperature. A variety of magnetic states including reversed magnetic domains are randomly obtained in low probability. The dynamics of vortices found in most of observed magnetic states seems to play a key role in triggering the magnetization reversal.
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U2 - 10.1143/JJAP.45.L1322
DO - 10.1143/JJAP.45.L1322
M3 - Article
AN - SCOPUS:34547212316
VL - 45
SP - L1322-L1324
JO - Japanese Journal of Applied Physics, Part 2: Letters
JF - Japanese Journal of Applied Physics, Part 2: Letters
SN - 0021-4922
IS - 46-50
ER -