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Título: | Electrodeposited Ni-Based Magnetic Mesoporous Films as Smart Surfaces for Atomic Layer Deposition: An “All-Chemical” Deposition Approach toward 3D Nanoengineered Composite Layers |
Autor: | Zhang, Jin; Quintana, Alberto; Menéndez, Enric CSIC ORCID; Coll, Mariona CSIC ORCID; Pellicer, Eva CSIC ORCID; Sort, Jordi CSIC ORCID | Palabras clave: | Atomic layer deposition Magnetic properties Mesoporous films Nanoengineered composites Surfactant-assisted electrodeposition |
Fecha de publicación: | 23-may-2018 | Editor: | American Chemical Society | Citación: | ACS Applied Materials and Interfaces 10(17): 14877-14885 (2018) | Resumen: | 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. | Versión del editor: | http://dx.doi.org/10.1021/acsami.8b01626 | URI: | http://hdl.handle.net/10261/165036 | ISSN: | 1944-8244 |
Aparece en las colecciones: | (ICMAB) Artículos |
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