Towards Magnetic Bimetallic Wire-Like Nanostructures — Magnetic Field as Growth Parameter
M Krajewski , M. Tokarczyk , Agnieszka Witecka , S. Lewińska , Anna Ślawska-Waniewska , Magdalena Płocińska
AbstractThe magnetically-assisted growth of the amorphous bimetallic iron–nickel wire-like nanostructures is presented in this work. The applied process is based on a simple reduction reaction of aqueous solutions containing Fe2+ and Ni2+ ions with NaBH4 in the presence of an external magnetic field of about 0.05 T. The morphology, chemical composition, and magnetic properties of as-prepared Fe–Ni nanostructures have been determined by means of scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffractometry, and vibrating sample magnetometry. The obtained experimental data indicate that the as-prepared samples exhibit quite complex architectures i.e., they comprise of nanoparticles aligned in almost straight lines. In addition, they reveal the typical core-shell structures where the amorphous bimetallic alloy cores are covered by thin amorphous oxide shells. In turn, the magnetic measurements show that the Fe–Ni wire-like nanostructures behave as typical ferromagnetic nanomaterials and their magnetic parameters like saturation magnetizations and coercivities are strictly dependent on their sizes and chemical compositions.
|Journal series||Acta Physica Polonica A, ISSN 0587-4246, e-ISSN 1898-794X|
|Publication size in sheets||0.3|
|Conference||LIV Zakopane School of Physics Breaking Frontiers, 21-05-2019 - 25-05-2019, Zakopane, Polska|
|Keywords in English||amorphous materials, bimetallic nanostructures, magnetic-field-induced synthesis, magnetic materials, wire-like nanostructures|
|Score||= 40.0, 06-04-2020, ArticleFromJournal|
|Publication indicators||= 0; : 2018 = 0.453; : 2018 = 0.545 (2) - 2018=0.532 (5)|
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