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| Title: | Exchange bias in laterally oxidized Au/Co/Au nanopillars |
Authors: | Balcells Argemi, Lluis; Martínez Perea, Benjamín CSIC ORCID; Iglesias-Freire, Óscar CSIC ORCID; García-Martín, José Miguel CSIC ORCID ; Cebollada, Alfonso CSIC ORCID; García-Martín, Antonio CSIC ORCID ; Armelles Reig, Gaspar CSIC ORCID; Sepúlveda, Borja CSIC ORCID; Alaverdyan, Yury | Keywords: | Antiferromagnetic materials Cobalt Coercive force Colloids Exchange interactions (electron) Ferromagnetic materials |
Issue Date: | 9-Feb-2009 | Publisher: | American Institute of Physics | Citation: | Applied Physics Letters 94(6): 062502 (2009) | Abstract: | Au/Co/Au nanopillars fabricated by colloidal lithography of continuous trilayers exhibit an enhanced coercive field and the appearance of an exchange bias field with respect to the continuous layers. This is attributed to the lateral oxidation of the Co interlayer that appears upon disk fabrication. The dependence of the exchange bias field on the Co nanodots size and on the oxidation degree is analyzed and its microscopic origin clarified by means of Monte Carlo simulations based on a model of a cylindrical dot with lateral core/shell structure. | Description: | 3 pages, 4 figures.-- PACS: 75.30.Et; 75.50.Tt; 81.16.Nd; 61.46.Df; 75.60.Ej; 75.50.Ee | Publisher version (URL): | http://dx.doi.org/10.1063/1.3078411 | URI: | http://hdl.handle.net/10261/21576 | DOI: | 10.1063/1.3078411 | ISSN: | 0003-6951 |
| Appears in Collections: | (IMN-CNM) Artículos (ICMAB) Artículos |
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