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RESEARCH PRODUCT
Ptychographic imaging and micromagnetic modeling of thermal melting of nanoscale magnetic domains in antidot lattices
Gisela SchützTolek TyliszczakEberhard GoeringDavid A. ShapiroFelix HaeringHermann StollHermann StollNick TrägerMarkus WeigandJoachim GräfeDavid VineUlf WiedwaldUlrich NowakGeorg DieterleIuliia BykovaPaul J. ZiemannMaxim SkripnikMaxim Skripniksubject
010302 applied physicsMaterials scienceCondensed matter physicsMagnetic domainbusiness.industryGeneral Physics and Astronomy02 engineering and technologyPhysik (inkl. Astronomie)021001 nanoscience & nanotechnology01 natural sciencesPtychographylcsh:QC1-999Lattice (order)0103 physical sciencesComputer data storagePatterned mediaThermalMicroscopyddc:5300210 nano-technologybusinessNanoscopic scalelcsh:Physicsdescription
CA extern Antidot lattices are potential candidates to act as bit patterned media for data storage as they are able to trap nanoscale magnetic domains between two adjacent holes. Here, we demonstrate the combination of micromagnetic modeling and x-ray microscopy. Detailed simulation of these systems can only be achieved by micromagnetic modeling that takes thermal effects into account. For this purpose, a Landau-Lifshitz-Bloch approach is used here. The calculated melting of magnetic domains within the antidot lattice is reproduced experimentally by x-ray microscopy. Furthermore, we compare conventional scanning transmission x-ray microscopy with resolution enhanced ptychography. Hence, we achieve a resolution of 13 nm. The results demonstrate that ptychographic imaging can also recover magnetic contrast in the presence of a strong topological variation and is generally applicable toward magnetic samples requiring ultimate resolution. © 2020 Author(s).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-12-01 | AIP Advances |