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

Author

Denardin, Juliano C. ; Burgos, Erick ; Lavin, Roberto ; Vojkovic, Smiljan ; Briones, Joel ; Flores, Maria

Author_Institution

Dept. de Fis., Univ. de Santiago, Santiago, Chile

Volume

50

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

1

Lastpage

4

Abstract

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.

Keywords

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; Coercive force; Magnetic domains; Magnetic hysteresis; Magnetic multilayers; Nonhomogeneous media; Perpendicular magnetic anisotropy; Magnetic hysteresis; magnetic multilayers; nanoporous materials;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2331973

Filename

6971713