Unraveling the properties of sharply defined submicron scale FeCu and FePd magnetic structures fabricated by electrodeposition onto electron-beam-lithographed substrates

Dislaki, Evangelia; Cialone, Matteo; Celegato, Federica; Rizzi, Paola; Tiberto, P.; Vadilonga, Simone; Többens, Daniel M.; Sort, Jordi; Pellicer, Eva

doi:10.1016/j.matdes.2020.108826

Cited by 3 publications

(2 citation statements)

References 53 publications

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“…But that is not the case for co-depositing Fe and Pd as both have a large difference in their reduction potentials, which makes it challenging. Thus, the FePd electrodeposition essentially requires a suitable complexing agent that would shift the reduction potential of Pd towards the less-noble Fe while keeping the electrolyte chemically stable [ 22 , 23 , 24 ]. In addition, hydrogen evolution takes place during the process as a side reaction [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Synthesis, Magnetic and Optical Characterisation of FePd Dense and Mesoporous Nanowires

et al. 2023

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Dense and mesoporous FePd nanowires (NWs) with 45 to 60 at.% Pd content were successfully fabricated by template- and micelle-assisted pulsed potentiostatic electrodeposition using nanoporous anodic alumina and polycarbonate templates of varying pore sizes. An FePd electrolyte was utilized for obtaining dense NWs while a block copolymer, P-123, was added to this electrolyte as the micelle-forming surfactant to produce mesoporous NWs. The structural and magnetic properties of the NWs were investigated by electron microscopy, X-ray diffraction, and vibrating sample magnetometry. The as-prepared NWs were single phase with a face-centered cubic structure exhibiting 3.1 µm to 7.1 µm of length. Mesoporous NWs revealed a core-shell structure where the porosity was only witnessed in the internal volume of the NW while the outer surface remained non-porous. Magnetic measurements revealed that the samples displayed a soft ferromagnetic behavior that depended on the shape anisotropy and the interwire dipolar interactions. The mesoporous core and dense shell structure of the NWs were seen to be slightly affecting the magnetic properties. Moreover, mesoporous NWs performed excellently as SERS substrates for the detection of 4,4′-bipyridine, showing a low detection limit of 10−12 M. The signal enhancement can be attributed to the mesoporous morphology as well as the close proximity of the embedded NWs being conducive to localized surface plasmon resonance.

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Section: Introductionmentioning

confidence: 99%

Electrochemical Synthesis, Magnetic and Optical Characterisation of FePd Dense and Mesoporous Nanowires

et al. 2023

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“…Many general approaches have been employed to prepare array structures, including template methods [ 25 ], self-assembly techniques [ 26 ], and e-beam lithography [ 27 ]. The template method takes templates as the main configuration to control, affect, and modify the morphology and determine the properties.…”

Section: Introductionmentioning

confidence: 99%

H2O2/Glucose Sensor Based on a Pyrroloquinoline Skeleton-Containing Molecule Modified Gold Cavity Array Electrode

Wang

Zhao

et al. 2022

Nanomaterials

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H2O2-related metabolites are essential indicators in clinical diagnosis because the accumulation of such reactive oxygen species could cause the risk of cardiovascular disease. Herein, we reported an electrochemical sensor to determine H2O2 and glucose. The pyrroloquinoline skeleton containing molecules (PQT) were used as the electrocatalyst and the gold cavity array (GCA) electrodes as the supporting electrode. The GCA electrode was fabricated by electrodeposition using high-ordered two-dimensional polystyrene spheres as the template. The strong absorbability of iodide ions (I−) displaced adventitious materials from the metal surface and the I− monolayer was subsequently removed by electrochemical oxidation to get a clean electrode surface. PQT molecules were firmly immobilized on the GCA electrode and performed an excellent electrocatalytic effect on H2O2/glucose detection, manifested by a small overpotential and a significantly increased reduction current. A good linear correlation was observed over a wide range of 0.2 μmol/L–1.0 mmol/L with the limit of detection of 0.05 μmol/L. Moreover, the sensor can realize sensitive, accurate, and the highly selective detection of actual samples, proving its application prospect in clinical diagnosis.

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Understanding the kinetics of Fe subsurface dissolution and surface segregation upon annealing Fe on Pd(111) in vacuum/oxygen environment

et al. 2022

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Unraveling the properties of sharply defined submicron scale FeCu and FePd magnetic structures fabricated by electrodeposition onto electron-beam-lithographed substrates

Cited by 3 publications

References 53 publications

Electrochemical Synthesis, Magnetic and Optical Characterisation of FePd Dense and Mesoporous Nanowires

Electrochemical Synthesis, Magnetic and Optical Characterisation of FePd Dense and Mesoporous Nanowires

H2O2/Glucose Sensor Based on a Pyrroloquinoline Skeleton-Containing Molecule Modified Gold Cavity Array Electrode

Understanding the kinetics of Fe subsurface dissolution and surface segregation upon annealing Fe on Pd(111) in vacuum/oxygen environment

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