Complex magnetic interactions and charge transfer effects in highly ordered NixFe1−x nano-wires

Chang, Shan-Chwen; Yang, Chao Yao; Chung, Hao; Tseng, Yuan-Chieh

doi:10.1016/j.jmmm.2012.11.037

Cited by 6 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The average local and global magnetic moments of Tables and are plotted in Figure for (a) Fe and (b) Ni atoms, as well as (c) Ni–Fe compounds versus Ni concentration x in octahedral (red solid triangles) and tetrahedral (blue solid rhombuses) Ni x Fe 1− x NWs, in comparison with the bulk and NW experimental data . The theoretical error bars in Figure (a,b) indicate the fluctuation of local μ, while the experimental ones were obtained from the corresponding references.…”

Section: Resultsmentioning

confidence: 99%

“…In this study, we analyze the local and global magnetic moments of Ni x Fe 1− x nanowires starting from a face‐centered‐cubic (FCC) Ni structure. A variety of experimental studies on Ni x Fe 1− x NWs have been performed, while on the theoretical side there are very few ab initio studies addressing Ni x Fe 1− x NWs. Recently, magnetic properties of Ni x Fe 1− x NWs have been studied using the DFT applied to body‐centered‐cubic (BCC) (110)‐oriented NWs …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quantum Confinement and Surface Effects on the Itinerant Ferromagnetism in Ni and Ni–Fe Nanowire Arrays: An Ab Initio Study

Ziti

Britel

Bouajaj

et al. 2018

Physica Status Solidi (b)

View full text Add to dashboard Cite

Coordination number reduction of surface atoms and spatial confinement of itinerant electrons are decisive factors in the nano‐ferromagnetism. Impacts of these factors on the ferromagnetic moments of Ni and Ni–Fe nanowire (NW) arrays are quantified by means of the density functional theory through both atomic‐orbital and plane‐wave approaches. A systematic study of the wire diameter, interwire distance and chemical composition on the magnetic properties were carried out in eight thin nanowires to investigate the limiting cases of confinement and surface effects. The results reveal a growth of the magnetic moment when the wire diameter diminishes, due to the decrease of average coordination number which reduces the 3d electronic band width and then a larger spin population contrast. This fact is consistent with experimental data obtained from Ni nanoparticles and NWs. Moreover, we found a critical interwire distance, which is the minimum separation that maintains the individual NW magnetic moment. Finally, both local and global magnetic moments of Ni–Fe NWs obtained from the ab initio calculations are compared with experimental ones and a good consistency is observed.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%