English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/199095
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 | DATACITE
Exportar a otros formatos:


Coercivity modulation in Fe–Cu pseudo-ordered porous thin films controlled by an applied voltage: A sustainable, energy-efficient approach to magnetoelectrically driven materials

AuthorsDislaki, Evangelia; Robbennolt, Shauna; Campoy Quiles, Mariano ; Nogués, Josep ; Pellicer, Eva; Sort, Jordi
Issue Date2018
CitationAdvanced Science 5(8): 1800499 (2018)
AbstractFe–Cu films with pseudo‐ordered, hierarchical porosity are prepared by a simple, two‐step procedure that combines colloidal templating (using sub‐micrometer‐sized polystyrene spheres) with electrodeposition. The porosity degree of these films, estimated by ellipsometry measurements, is as high as 65%. The resulting magnetic properties can be controlled at room temperature using an applied electric field generated through an electric double layer in an anhydrous electrolyte. This material shows a remarkable 25% voltage‐driven coercivity reduction upon application of negative voltages, with excellent reversibility when a positive voltage is applied, and a short recovery time. The pronounced reduction of coercivity is mainly ascribed to electrostatic charge accumulation at the surface of the porous alloy, which occurs over a large fraction of the electrodeposited material due to its high surface‐area‐to‐volume ratio. The emergence of a hierarchical porosity is found to be crucial because it promotes the infiltration of the electrolyte into the structure of the film. The observed effects make this material a promising candidate to boost energy efficiency in magnetoelectrically actuated devices.
Publisher version (URL)https://doi.org/10.1002/advs.201800499
Appears in Collections:(CIN2) Artículos
Files in This Item:
File Description SizeFormat 
coercimateri.pdf2,22 MBAdobe 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.