Title :
Analysis of Magnetic Domain Patterns and Vector Hysteresis Loops in Dot/Antidot Structures
Author :
Coïsson, Marco ; Celegato, Federica ; Olivetti, Elena Sonia ; Tiberto, Paola ; Vinai, Franco
Author_Institution :
Electromagn. Div., INRIM, Torino, Italy
Abstract :
Dot and antidot structures have been prepared by means of optical lithography on Co-Fe-Si-B and permalloy thin films with thickness of 100 nm and 50 nm respectively. Magnetic force microscopy has been employed to study their surface magnetization configuration. Vector vibrating sample magnetometry has been exploited to measure hysteresis loops with the application of an in-plane magnetic field directed at different angles with respect to the dot/antidot arrays. Depending on microstructure geometry and chosen material, different and complex domain structures have been observed and discussed with the support of vector magnetization measurements.
Keywords :
Permalloy; amorphous magnetic materials; boron alloys; cobalt alloys; interface magnetism; iron alloys; magnetic domains; magnetic force microscopy; magnetic hysteresis; magnetic thin films; photolithography; quantum dots; silicon alloys; surface magnetism; CoFeSiB; Ni80Fe20; amorphous magnetic materials; dot-antidot structures; in-plane magnetic field; magnetic domain patterns; magnetic force microscopy; microstructure geometry; optical lithography; permalloy thin films; size 100 nm; size 50 nm; surface magnetization configuration; vector hysteresis loops; vector vibrating sample magnetometry; Amorphous magnetic materials; antidots; domain structure; dots; permalloy;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2009.2021394
