Magnetic Properties of Co/Cu/Py Antidot Films With Different Pore Diameters

Denardin, J.C., Burgos, E.,Lavin, R.,Vojkovic, S.

Magnetics, IEEE Transactions （2014）

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摘要

The magnetic properties of ordered nanoscale Co/Cu/Py multilayer antidot films with different pore sizes prepared on top of nanoporous alumina membranes (NAMs) are presented. Using Co and Py films separated by a Cu thin layer, and tuning the pore diameters of the NAMs, we were able to play with the coercivity of the films and observe stepped magnetization curves, as a consequence of the different coercivities of the Co and Py films. The magnetic properties of the multilayer antidots have been measured and compared with results obtained for antidots of Cu/Py. The magnetization reversal process that occurs in each individual layer and in the multilayer was studied by means of micromagnetic simulations.

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关键词

Permalloy,cobalt,coercive force,copper,magnetic multilayers,magnetic thin films,magnetisation reversal,metallic thin films,micromagnetics,nanofabrication,nanomagnetics,nanoporous materials,porosity,quantum dots,sputter deposition,Al2O3,Co-Cu-FeNi,Cu thin layer,coercivity,magnetic properties,magnetization reversal,micromagnetic simulations,nanoporous alumina membranes,ordered nanoscale multilayer antidot films,pore diameters,pore sizes,stepped magnetization curves,Magnetic hysteresis,magnetic multilayers,nanoporous materials,

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