Electrodeposited Ni-based magnetic mesoporous films as smart surfaces for atomic layer deposition: an 'all-chemical' deposition approach toward 3D nanoengineered composite layers
Zhang, Jin (Universitat Autònoma de Barcelona. Departament de Física)
Quintana Puebla, Alberto (Universitat Autònoma de Barcelona. Departament de Física)
Menéndez Dalmau, Enric (Universitat Autònoma de Barcelona. Departament de Física)
Coll, Maria Dolors (Institut de Ciència de Materials de Barcelona)
Pellicer Vilà, Eva Maria (Universitat Autònoma de Barcelona. Departament de Física)
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física)

Date:	2018
Abstract:	Mesoporous Ni and Cu-Ni (Cu₂₀Ni₈₀ and Cu₄₅Ni₅₅ in at. %) films, showing a three-dimensional (3D) porous structure and tunable magnetic properties, are prepared by electrodeposition from aqueous surfactant solutions using micelles of P-123 triblock copolymer as structure-directing entities. Pores between 5 and 30 nm and dissimilar space arrangements (continuous interconnected networks, circular pores, corrugated mesophases) are obtained depending on the synthetic conditions. X-ray diffraction studies reveal that the Cu-Ni films have crystallized in the face-centered cubic structure, are textured, and exhibit certain degree of phase separation, particularly those with a higher Cu content. Atomic layer deposition (ALD) is used to conformally coat the mesopores of Cu₂₀Ni₈₀ film with amorphous Al₂O₃, rendering multiphase "nano-in-meso" metal-ceramic composites without compromising the ferromagnetic response of the metallic scaffold. From a technological viewpoint, these 3D nanoengineered composite films could be appealing for applications like magnetically actuated micro/nanoelectromechanical systems (MEMS/NEMS), voltage-driven magneto-electric devices, capacitors, or as protective coatings with superior strength and tribological performance.
Grants:	European Commission 665919 European Commission 648454 Ministerio de Economía y Competitividad MAT2017-86357-C3-1-R Ministerio de Economía y Competitividad SEV-2015-0496 Ministerio de Economía y Competitividad RYC-2013-12448 Ministerio de Economía y Competitividad RYC-2012-10839 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-292 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1519 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1015
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Subject:	Atomic layer deposition ; Magnetic properties ; Mesoporous films ; Nanoengineered composites ; Surfactant-assisted electrodeposition
Published in:	ACS applied materials & interfaces, Vol. 10 (April 2018) , p. 14877-14885, ISSN 1944-8252

DOI: 10.1021/acsami.8b01626

Preprint 32 p, 1.7 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3) > SPIN-PORICS
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