Magnetic domain states in nano-sized Co nuclei electrodeposited onto monocrystalline silicon

Morphological and magnetic properties of cobalt nanoclusters electrodeposited onto HOPG

“…From this information, it is clear that at this surface coverage, the magnetic coupling between the grains is still negligible. Similar results were observed on cobalt nanoclusters electrodeposited onto Si substrates [11].…”

“…When using cobalt as electrodeposition element, most studies employed chlorine instead of sulphate electrolytes, since the last one exhibits lower current efficiency in comparison with chlorine solutions [7]. On the other hand, different working electrodes such as gold [8,9], silicon [10,11] and glassy carbon electrodes (GCE) [12][13][14][15], among others, have been employed in cobalt electrodeposition studies although highly oriented pyrolytic graphite (HOPG) surfaces have been scarcely investigated [12,16]. More recently, our group has analyzed the initial stages of the cobalt electrodeposition process onto glassy carbon (GCE) [14] and highly oriented pyrolytic graphite electrodes [16] electrodes, by using two different sulphate solutions in order to investigate the cationic influence on the nucleation process of cobalt nano-size aggregates.…”

“…From the electrochemical results, it was observed, that the kind of ion in solution influences the cluster formation energy as well as the growth rate as a function of the reduction potential. Although AFM has been widely employed to analyze the morphology and size of cobalt aggregates, magnetic force microscopy investigations have been only focus on cobalt nanoclusters onto silicon substrates [5,6,11]. So, in order to investigate the influence of the supporting electrolyte on the morphological and magnetic properties of cobalt nanoclusters onto HOPG electrodes, electrochemical deposition, SEM, AFM and MFM characterization techniques were employed.…”

Modulation of magnetic and structural properties of cobalt thin films by means of electrodeposition

“…One of the metals successfully deposited by this method is cobalt. The electrodeposition of cobalt metallic layers and alloys is of considerable interest due to its potential applications in several fields [1,2], especially in microelectronics for magnetic recording systems [3,4]. Cobalt is one of the most important ferromagnetic components of magnetic thin film materials.…”

Morphology, structure, and magnetism of FeCo thin films electrodeposited on hydrogen-terminated Si(111) surfaces

“…Munford et al [13] have demonstrated the feasibility of electrodeposition of high-quality continuous Co films on n-type Si(100), and different groups have already reported their electrochemical conditions for the deposition of these metal films on silicon substrates [14][15][16][17]. Even nanosized Co structures on n-and p-type Si(111) [18][19][20] were obtained without evidence of oxide formation, interdiffusion, or solid-state reactivity. In contrast, different reports on the electrodeposition of Fe on Si reveal oxide formation, except Kim et al [21] using methanolic chloride solutions.…”