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Title: | Magnetization reversal asymmetry in Fe/MgO (001) thin films |
Authors: | Costa Krämer, José Luis CSIC ORCID ; Menéndez, José Luis CSIC ORCID; Cebollada, Alfonso CSIC ORCID; Briones Fernández-Pola, Fernando CSIC; García, D.; Hernando, A. | Keywords: | Thin films Anisotropy Fe Domains Sputtering |
Issue Date: | Feb-2000 | Publisher: | Elsevier | Citation: | Journal of Magnetism and Magnetic Materials 210(1-3): 341-348 (2000) | Abstract: | We study the in-plane magnetization process in 200 Å Fe(0 0 1) thin films grown by sputtering at normal incidence. In spite of this growth geometry, a small uniaxial in plane magnetic anisotropy, whose origin is not totally understood, is found superimposed to the expected cubic biaxial one. This has a dramatic effect both on the reversal process and the domain structure. A combined longitudinal and transversal Kerr study shows the different switching processes (180° walls along the main easy axis versus 90° along the secondary easy axis) depending on the relative orientation of the magnetic field with respect to the Fe crystallographic axes. Remarkably, this two- and sometimes three-step switching process appears only when the field is applied along certain crystallographic directions. These findings are corroborated by domain observations. | Publisher version (URL): | http://dx.doi.org/10.1016/S0304-8853(99)00698-8 | URI: | http://hdl.handle.net/10261/34935 | DOI: | 10.1016/S0304-8853(99)00698-8 | ISSN: | 0304-8853 |
Appears in Collections: | (IMN-CNM) Artículos |
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