Towards Magnetic Bimetallic Wire-Like Nanostructures — Magnetic Field as Growth Parameter

M Krajewski , M. Tokarczyk , Agnieszka Witecka , S. Lewińska , Anna Ślawska-Waniewska , Magdalena Płocińska

Abstract

The 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.
Author M Krajewski - [Institute of Fundamental Technological Research of the Polish Academy of Sciences]
M Krajewski,,
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, M. Tokarczyk - [University of Warsaw (UW)]
M. Tokarczyk,,
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- Uniwersytet Warszawski
, Agnieszka Witecka (FMSE / DMD)
Agnieszka Witecka,,
- Division of Materials Design
, S. Lewińska - [Institute of Physics of the Polish Academy of Sciences]
S. Lewińska,,
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, Anna Ślawska-Waniewska - [Institute of Physics of the Polish Academy of Sciences]
Anna Ślawska-Waniewska,,
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, Magdalena Płocińska (FMSE / DMD)
Magdalena Płocińska,,
- Division of Materials Design
Journal seriesActa Physica Polonica A, ISSN 0587-4246, e-ISSN 1898-794X
Issue year2020
Vol137
No1
Pages59-61
Publication size in sheets0.3
ConferenceLIV Zakopane School of Physics Breaking Frontiers, 21-05-2019 - 25-05-2019, Zakopane, Polska
Keywords in Englishamorphous materials, bimetallic nanostructures, magnetic-field-induced synthesis, magnetic materials, wire-like nanostructures
ASJC Classification3100 General Physics and Astronomy
DOIDOI:10.12693/APhysPolA.137.59
URL http://przyrbwn.icm.edu.pl/APP/ABSTR/137/a137-1-13.html
Languageen angielski
File
app137z1p13.pdf 679.6 KB
Score (nominal)40
Score sourcejournalList
ScoreMinisterial score = 40.0, 06-04-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.453; WoS Impact Factor: 2018 = 0.545 (2) - 2018=0.532 (5)
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