Three-dimensional ferromagnetic architectures with multiple metastable states

F Nasirpouri, Miles A Engbarth, Simon J Bending, Laurence M Peter, A Knittel, H Fangohr, M V Milosevic

Research output: Contribution to journalArticle

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Abstract

We demonstrate controllable dual-bath electrodeposition of nickel on architecture-tunable three-dimensional (3D) silver microcrystals. Magnetic hysteresis loops of individual highly faceted Ag-Ni core-shell elements reveal magnetization reversal that comprises multiple sharp steps corresponding to different stable magnetic states. Finite-element micromagnetic simulations on smaller systems show several jumps during magnetization reversal which correspond to transitions between different magnetic vortex states. Structures of this type could be realizations of an advanced magnetic data storage architecture whereby each element represents one multibit, storing a combination of several conventional bits depending on the overall number of possible magnetic states associated with the 3D core-shell shape.
LanguageEnglish
Article number222506
JournalApplied Physics Letters
Volume98
Issue number22
DOIs
StatusPublished - 2011

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metastable state
magnetization
microcrystals
data storage
electrodeposition
baths
hysteresis
silver
nickel
vortices
simulation

Cite this

Nasirpouri, F., Engbarth, M. A., Bending, S. J., Peter, L. M., Knittel, A., Fangohr, H., & Milosevic, M. V. (2011). Three-dimensional ferromagnetic architectures with multiple metastable states. DOI: 10.1063/1.3595339

Three-dimensional ferromagnetic architectures with multiple metastable states. / Nasirpouri, F; Engbarth, Miles A; Bending, Simon J; Peter, Laurence M; Knittel, A; Fangohr, H; Milosevic, M V.

In: Applied Physics Letters, Vol. 98, No. 22, 222506, 2011.

Research output: Contribution to journalArticle

Nasirpouri, F, Engbarth, MA, Bending, SJ, Peter, LM, Knittel, A, Fangohr, H & Milosevic, MV 2011, 'Three-dimensional ferromagnetic architectures with multiple metastable states' Applied Physics Letters, vol. 98, no. 22, 222506. DOI: 10.1063/1.3595339
Nasirpouri F, Engbarth MA, Bending SJ, Peter LM, Knittel A, Fangohr H et al. Three-dimensional ferromagnetic architectures with multiple metastable states. Applied Physics Letters. 2011;98(22). 222506. Available from, DOI: 10.1063/1.3595339
Nasirpouri, F ; Engbarth, Miles A ; Bending, Simon J ; Peter, Laurence M ; Knittel, A ; Fangohr, H ; Milosevic, M V. / Three-dimensional ferromagnetic architectures with multiple metastable states. In: Applied Physics Letters. 2011 ; Vol. 98, No. 22.
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