Structural, Wetting and Magnetic Properties of Sputtered Fe70Pd30 Thin Film with Nanostructured Surface Induced by Dealloying Process
Barrera, Gabriele (Istituto Nazionale di Ricerca Metrologica)
Celegato, Federica (Istituto Nazionale di Ricerca Metrologica)
Cialone, Matteo (Universitat Autònoma de Barcelona. Departament de Física)
Coisson, Marco (Istituto Nazionale di Ricerca Metrologica)
Rizzi, Paola (University of Torino)
Tiberto, Paola (Istituto Nazionale di Ricerca Metrologica)

Data:	2021
Resum:	FePd alloys in the thin film form represent a multipurpose and versatile material with relevant chemical and physical properties studied in different research fields. Moreover, the ability to manipulate and fine-tune the film surface with nanometric scale precision represents a degree of freedom useful to adapt these thin film properties to the demands of different desired applications. In this manuscript, Fe70Pd30 (at. %) thin films are prepared with a thickness of 50 and 200 nm by means of the widely used co-sputtering deposition technique. Subsequently, selective removal of the iron element from the alloy and the consequent surface diffusion of the palladium was induced by a dealloying treatment under free corrosion conditions in hydrochloric acid. The size and shape of the grains of the as-deposited thin films determine the dissolution rate of the iron element with a direct consequence not only on the surface morphology and the stoichiometry of the alloy but also on the wetting and magnetic properties of the sample. X-ray diffraction, Scanning Electron Microscopy (SEM) images, contact angle and magnetic measurements have been performed to provide a thorough characterisation of the fundamental properties of these nanostructured bimetallic thin films.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	FePd thin film ; Dealloying process ; Wettability ; Magnetic properties
Publicat a:	Nanomaterials, Vol. 11, Issue 2 (February 2021) , art. 282, ISSN 2079-4991

DOI: 10.3390/nano11020282
PMID: 33499056

14 p, 2.4 MB

El registre apareix a les col·leccions:
Articles > Articles de recerca
Articles > Articles publicats