Origin of magnetic switching field distribution in bit patterned media based on pre-patterned substrates

Using a combination of synchrotron radiation based magnetic imaging and high-resolution transmission electron microscopy we reveal systematic correlations between the magnetic switching field and the internal nanoscale structure of individual islands in bit patterned media fabricated by Co/Pd-multil...

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Bibliographic Details
Published in:Applied physics letters 2011-08, Vol.99 (6), p.062502-062502-3
Main Authors: Pfau, B., Günther, C. M., Guehrs, E., Hauet, T., Yang, H., Vinh, L., Xu, X., Yaney, D., Rick, R., Eisebitt, S., Hellwig, O.
Format: Article
Language:English
Subjects:
COBALT
Condensed Matter
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CORRELATIONS
DEPOSITION
INTERFACES
LAYERS
MAGNETIC FIELDS
MAGNETIZATION
MATERIALS SCIENCE
NANOSCIENCE AND NANOTECHNOLOGY
NANOSTRUCTURES
PALLADIUM
Physics
RESOLUTION
SPATIAL DISTRIBUTION
SUBSTRATES
SYNCHROTRON RADIATION
TRANSMISSION ELECTRON MICROSCOPY
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Summary:Using a combination of synchrotron radiation based magnetic imaging and high-resolution transmission electron microscopy we reveal systematic correlations between the magnetic switching field and the internal nanoscale structure of individual islands in bit patterned media fabricated by Co/Pd-multilayer deposition onto pre-patterned substrates. We find that misaligned grains at the island periphery are a common feature independent of the island switching field, while irregular island shapes and misaligned grains specifically extending into the center of an island are systematically correlated with a reduced island reversal field.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3623488