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Open Access item Magnetic anisotropy and intergrain interactions in L10 CoPt (111)/Pt(111)/MgO(100) PLD granular films with tilted easy axes

Authors:Varvaro, G.
Agostinelli, E.
Laureti, S.
Testa, A. M.
García-Martín, José Miguel
Briones Fernández-Pola, Fernando
Fiorani, D.
Keywords:Perpendicular anisotropy, Magnetic nanostructures, Magnetic domains
Issue Date:19-Jun-2008
Publisher:Institute of Physics Publishing
Citation:Journal of Physics D: Applied Physics, 41 (2008)
Abstract:The magnetic properties of tilted easy axis L10 CoPt(1 1 1)/Pt(1 1 1)/MgO(1 0 0) film, deposited by pulsed laser deposition, were investigated by magnetization angular dependence measurements and magnetic force microscopy (MFM). The room temperature anisotropy constant, evaluated measuring the in-plane variation of transverse magnetization under a rotating magnetic field, is K1 = 5 × 106 erg cm−3. The domain structure, observed by MFM, consists of decoupled single domain grains, unlike the maze-like structure usually observed for similar systems. This was confirmed by the analysis of dc demagnetization and isothermal remanence magnetization curves, which provided evidence of predominant magnetostatic interactions.
Publisher version (URL):http://dx.doi.org/10.1088/0022-3727/41/13/134017
Appears in Collections:(IMM-CNM) Artículos

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