English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/181415
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Spontaneous exchange bias formation driven by a structural phase transition in the antiferromagnetic material

AuthorsMigliorini, Andrea; Kuerbanjiang,Balati; Huminiuc, T.; Kepaptsoglou, Demie; Muñoz Sánchez, Manuel ; Cuñado, J. L. F.; Camarero, Julio ; Aroca, C.; Vallejo-Fernández, Gonzalo; Lazarov, Vlado; Prieto, J. L.
Issue Date20-Nov-2018
PublisherSpringer Nature
CitationNature Materials 17: 28-35 (2018)
AbstractMost of the magnetic devices in advanced electronics rely on the exchange bias effect, a magnetic interaction that couples a ferromagnetic and an antiferromagnetic material, resulting in a unidirectional displacement of the ferromagnetic hysteresis loop by an amount called the ‘exchange bias field’. Setting and optimizing exchange bias involves cooling through the Néel temperature of the antiferromagnetic material in the presence of a magnetic field. Here we demonstrate an alternative process for the generation of exchange bias. In IrMn/FeCo bilayers, a structural phase transition in the IrMn layer develops at room temperature, exchange biasing the FeCo layer as it propagates. Once the process is completed, the IrMn layer contains very large single-crystal grains, with a large density of structural defects within each grain, which are promoted by the FeCo layer. The magnetic characterization indicates that these structural defects in the antiferromagnetic layer are behind the resulting large value of the exchange bias field and its good thermal stability. This mechanism for establishing the exchange bias in such a system can contribute towards the clarification of fundamental aspects of this exchange interaction.
Publisher version (URL)http://dx.doi.org/10.1038/NMAT5030
Appears in Collections:(IMN-CNM) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.