Magnetic antidot to dot crossover in Co and Py nanopatterned thin films
- Castán-Guerrero, C.
- Herrero-Albillos, J.
- Bartolomé, J.
- Bartolomé, F.
- Rodríguez, L.A.
- Magén, C.
- Kronast, F.
- Gawronski, P.
- Chubykalo-Fesenko, O.
- Merazzo, K.J.
- Vavassori, P.
- Strichovanec, P.
- Sesé, J.
- García, L.M.
DOIAbstract
The crossover from antidot to dot magnetic behavior on arrays patterned in a ferromagnetic thin film has been achieved by modifying only the geometry. A series of antidot arrays has been fabricated on cobalt with fixed diameter d and by reducing the period of the array p from p»d to p<d. A dramatic change in the coercivity dependence with p, correlated with a significant modification in the magnetic domain structure observed by x-ray photoemission electron microscopy, evidences the crossover. An intermediate regime has been found between the superdomain structure present in antidot arrays and the array of astroid-state noncorrelated dots. The study has been reproduced for a different ferromagnetic material, permalloy, and supported by micro...
Add to ORKG