Title :
Analysis of magnetic relaxation with pre-existing nucleation sites based on the Fatuzzo-Labrune model
Author :
Quach, D. ; Handoko, D. ; Lee, S. ; Shim, J. ; Phan, T. ; Kim, D. ; Pham, D. ; Lee, K. ; Jeong, J. ; Ngo, D.
Author_Institution :
Dept. of Phys., Chungbuk Nat. Univ., Cheongju, South Korea
Abstract :
Time-resolved magnetic domain patterns of (Co/Pt) and (CoFeB/Pd) multilayers with perpendicular magnetic anisotropy are observed by means of magneto-optical microscopy, from which magnetic relaxation curves are determined for. Interestingly, it has been observed that the relaxation processes not only from the saturated state, but also with pre-existing domains, are well explained based on the Fatuzzo-Labrune model. Full details of the relaxation behavior and subsequent microscopic domain patterns evolving from the pre-existing nucleation sites originated from the sub-structured magnetic domains are discussed.
Keywords :
boron alloys; cobalt; cobalt alloys; iron alloys; magnetic domains; magnetic multilayers; magnetic relaxation; magneto-optical effects; nucleation; optical microscopy; palladium; perpendicular magnetic anisotropy; platinum; Co-Pt; CoFeB-Pd; Fatuzzo-Labrune model; magnetic relaxation curves; magneto-optical microscopy; microscopic domain patterns; multilayers; nucleation sites; perpendicular magnetic anisotropy; substructured magnetic domains; time-resolved magnetic domain patterns; Films; Magnetic domain walls; Magnetic domains; Magnetic multilayers; Perpendicular magnetic anisotropy; Saturation magnetization;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157164
