Single vortex core recording in a magnetic vortex lattice. Mitin, D., Nissen, D., Schädlich, P., Arekapudi, S. S. P. K., & Albrecht, M. Journal of Applied Physics, 115(6):063906, February, 2014.
Single vortex core recording in a magnetic vortex lattice [link]Paper  doi  abstract   bibtex   
We investigated the reversal characteristics of magnetic vortex cores in a two dimensional assembly of magnetic vortices. The vortex lattice was created by film deposition of 30-nm-thick permalloy onto large arrays of self-assembled spherical SiO2-particles with a diameter of 330 nm. The vortex core reversal was investigated by employing a write/read tester. This device uses a state-of-the-art magnetic recording head of a hard disc drive, which allows imaging as well as applying a local magnetic field pulse to individual vortices. The successful writing and reading of individual vortex cores is demonstrated, including a switching map, which indicates the switching behavior dependent on the relative position of the field pulse with respect to the vortex core.
@article{mitin_single_2014,
	title = {Single vortex core recording in a magnetic vortex lattice},
	volume = {115},
	issn = {0021-8979, 1089-7550},
	url = {http://scitation.aip.org/content/aip/journal/jap/115/6/10.1063/1.4865746},
	doi = {10.1063/1.4865746},
	abstract = {We investigated the reversal characteristics of magnetic vortex cores in a two dimensional assembly of magnetic vortices. The vortex lattice was created by film deposition of 30-nm-thick permalloy onto large arrays of self-assembled spherical SiO2-particles with a diameter of 330 nm. The vortex core reversal was investigated by employing a write/read tester. This device uses a state-of-the-art magnetic recording head of a hard disc drive, which allows imaging as well as applying a local magnetic field pulse to individual vortices. The successful writing and reading of individual vortex cores is demonstrated, including a switching map, which indicates the switching behavior dependent on the relative position of the field pulse with respect to the vortex core.},
	number = {6},
	urldate = {2014-02-27},
	journal = {Journal of Applied Physics},
	author = {Mitin, D. and Nissen, D. and Schädlich, P. and Arekapudi, S. S. P. K. and Albrecht, M.},
	month = feb,
	year = {2014},
	keywords = {Magnetic field reversals, Magnetic field sensors, Magnetic fields, Magnetic films, Polarization, Rotating flows, Thin film deposition, Thin film structure, Vortex lattices, magnetic force microscopy},
	pages = {063906},
}

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