Yoon, Jungbum Lee, Jae-Chul You, Chun-Yeol Choe, Sug-Bong Shin, Kyung-Ho Jung, Myung-Hwa 2024-01-20T22:32:21Z 2024-01-20T22:32:21Z 2021-08-31 2008-11 0018-9464 https://pubs.kist.re.kr/handle/201004/133040 We investigated the pulse-current-driven and magnetic-field-driven domain wall (DW) motion in permalloy nanowires; with different shapes and wire widths. Two different nanowire types, 600 nm wide L- and 300 nm wide G shaped, were considered by means of magnetic force microscope and anisotropic magnetoresistance measurement. We confirmed that every time head-to-head vortex DWs were placed at the specific places as we intended for both types of nanowires. We found similar critical current densities (similar to 5 x 10(11) A/m(2)) and DW velocity (similar to 2.0 m/s) for both nanowires in spite of their different shapes and widths. Multiple vortex DWs were also observed when the applied current density exceeded only a few percent of the critical values. We also performed magnetic-field-driven DW propagations. From the pinning and depinning images and anisotropic magnetoresistance measurement, we found the magnetoresistance value of the single vortex type DW for the L-shaped permalloy nanowire. English IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC Current- and Field-Driven Domain Wall Motion in L- and C-Shaped Permalloy Nanowires With Different Wire Widths Article 10.1109/TMAG.2008.2003057 1 IEEE TRANSACTIONS ON MAGNETICS, v.44, no.11, pp.2527 - 2530 IEEE TRANSACTIONS ON MAGNETICS 44 11 2527 2530 scie scopus 000262221200018 2-s2.0-77949791779 Engineering, Electrical & Electronic Physics, Applied Engineering Physics Article; Proceedings Paper Anisotropic magnetoresistance (AMR) domain wall (DW) motion spin-transfer-torque