Kim, Duck-Ho Yoo, Sang-Cheol Kim, Dae-Yun Moon, Kyoung-Woong Je, Soong-Geun Cho, Cheong-Gu Min, Byoung-Chul Choe, Sug-Bong 2024-01-20T10:03:01Z 2024-01-20T10:03:01Z 2021-09-05 2014-04 0003-6951 https://pubs.kist.re.kr/handle/201004/126942 We report an experimental observation that indicates that a direct relation exists between the speed of the magnetic domain-wall (DW) motion and the magnitude of the perpendicular magnetic anisotropy (PMA) in Pt/Co/Pt films. It is found that by changing the thicknesses of the nonmagnetic Pt layers, the PMA magnitude can be varied significantly and the field-driven DW speed can also be modified by a factor of up to 50 under the same magnetic field. Interestingly, the DW speed exhibits a clear scaling behavior with respect to the PMA magnitude. A theory based on the DW creep criticality successfully explains the observed scaling exponent between the DW speed and the PMA magnitude. The presented results offer a method of maximizing the DW speed in DW-mediated nanodevices without altering the thickness of the magnetic Co layer. (C) 2014 AIP Publishing LLC. English AMER INST PHYSICS Maximizing domain-wall speed via magnetic anisotropy adjustment in Pt/Co/Pt films Article 10.1063/1.4871091 1 APPLIED PHYSICS LETTERS, v.104, no.14 APPLIED PHYSICS LETTERS 104 14 scie scopus 000334849200042 2-s2.0-84899005344 Physics, Applied Physics Article MOTION MEMORY CREEP