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Colloidal domain lithography in multilayers with perpendicular anisotropy: an experimental study and micromagnetic
Piotr Kuświk1, Iosif Sveklo, Bogdan Szymański
1Institute of Molecular Physics, Polish Academy of Sciences, Poznań, Poland. kuswik@ifmpan.poznan.pl
Nanotechnology
|November 3, 2012
Summary
Researchers demonstrate magnetic patterning of multilayer systems using ion bombardment. This technique creates regularly arranged magnetic domains with perpendicular anisotropy, suitable for spintronics and magnetic storage media.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Patterned multilayer systems with perpendicular magnetic anisotropy are crucial for spintronics and advanced magnetic storage.
- Improving the performance of these systems requires effective patterning techniques.
Purpose of the Study:
- To investigate the magnetic patterning of (NiFe/Au/Co/Au) multilayers using ion bombardment.
- To create regularly arranged magnetic domains with perpendicular anisotropy.
Main Methods:
- Ion bombardment (He+ 10 keV and Ar+ 100 keV) of (Ni80Fe20-2 nm/Au-2 nm/Co-0.6 nm/Au-2 nm)10 multilayers through a colloidal mask.
- Micromagnetic simulations to analyze the resulting magnetic structures.
Main Results:
- Successfully achieved magnetic patterning of regularly arranged cylindrical magnetic domains with perpendicular anisotropy.
- These domains form a two-dimensional hexagonal lattice with submicron periodicity and large correlation length.
- Magnetic anisotropy remains unaffected, while magnetization configuration depends on the matrix properties.
Conclusions:
- Ion bombardment through a colloidal mask is an effective method for creating patterned magnetic domains in multilayer systems.
- The resulting structures are promising for applications in spintronics and magnetic data storage.
- Micromagnetic simulations provide insights into the behavior of these patterned magnetic systems.
