Instytut Podstawowych Problemów Techniki
Polskiej Akademii Nauk

Partnerzy

Sz-Chian Liou

University of Maryland (US)

Ostatnie publikacje
1.  Krajewski M., Liou S.C., Chiou W.A., Tokarczyk M., Małolepszy A., Płocińska M., Witecka A., Lewińska S., Ślawska-Waniewska A., Amorphous FexCo1–x wire-like nanostructures manufactured through surfactant-free magnetic-field-induced synthesis, Crystal Growth and Design, ISSN: 1528-7483, DOI: 10.1021/acs.cgd.0c00070, Vol.20, No.5, pp.3208-3216, 2020

Streszczenie:
So far, it has been proven that the magnetic-field-induced (MFI) synthesis is a process which mainly leads to the formation of magnetic metallic one-dimensional nanostructures. Taking advantage of this method, the new procedures which allow manufacture of the magnetic bimetallic iron–cobalt wire-like nanochains with Fe0.75 Co0.25, Fe0.50 Co0.50, and Fe0.25 Co0.75 compositions are demonstrated in this work. They were produced through a simple one-step magnetic-field-induced (MFI) chemical co-reduction of three different mixtures containing a proper amount of Fe2+ and Co2+ ions with aqueous sodium borohydride solution as the reducing agent. The synthesis process was carried out at room temperature without the use of templates, surfactants, complexing agents, and organic solvents. The morphological and structural studies indicated that all as-prepared materials were amorphous, and they were composed of nanoparticles aligned in almost straight chains. Moreover, they revealed the core–shell structures with bimetallic alloy cores containing desired iron-to-cobalt ratios and very thin oxide shells. Furthermore, the obtained nanostructures behaved as ferromagnetic materials. Their magnetic properties were correlated with their structural properties and chemical compositions. It was observed that their saturation magnetization decreased significantly with increasing content of cobalt in the chains, whereas the variation of their coercivity was less pronounced.

Afiliacje autorów:
Krajewski M. - IPPT PAN
Liou S.C. - University of Maryland (US)
Chiou W.A. - University of Maryland (US)
Tokarczyk M. - Uniwersytet Warszawski (PL)
Małolepszy A. - Warsaw University of Technology (PL)
Płocińska M. - Warsaw University of Technology (PL)
Witecka A. - IPPT PAN
Lewińska S. - Institute of Physics, Polish Academy of Sciences (PL)
Ślawska-Waniewska A. - inna afiliacja
100p.

Prace konferencyjne
1.  Krajewski M., Tokarczyk M., Witecka A., Lewińska S., Ślawska-Waniewska A., Małolepszy A., Liou S.C., Chiou W.A., Manufacturing and magnetic properties of FexCo1‒x wire-like nanoalloys, CNM 2019, 6th CONFERENCE ON NANO- AND MICROMECHANICS, 2019-07-03/07-05, Rzeszów (PL), pp.103-104, 2019

Słowa kluczowe:
magnetic-field-induced process, magnetic material, nanoalloy, wire-like nanostructure

Afiliacje autorów:
Krajewski M. - IPPT PAN
Tokarczyk M. - Uniwersytet Warszawski (PL)
Witecka A. - IPPT PAN
Lewińska S. - Institute of Physics, Polish Academy of Sciences (PL)
Ślawska-Waniewska A. - inna afiliacja
Małolepszy A. - Warsaw University of Technology (PL)
Liou S.C. - University of Maryland (US)
Chiou W.A. - University of Maryland (US)
2.  Liou S.C., Krajewski M., Chiou W.A., Tokarczyk M., Kowalski G., TEM Studies of Fe1-xNix Nanowires by Magnetic-Field-Induced Synthesis, M&M 2019, Microscopy & Microanalysis 2019, 2019-08-04/08-08, Portland (US), DOI: 10.1017/S143192761901170X, No.25, pp.2194-2195, 2019

Abstrakty konferencyjne
1.  Krajewski M., Tokarczyk M., Witecka A., Lewińska S., Ślawska-Waniewska A., Liou S.C., Chiou W.A., Płocińska M., Towards magnetic 1D nanostructures - magnetic field as a growth parameter, LIV Zakopane School of Physics Breaking Frontiers: Submicron Structures in Physics and Biology, 2019-05-21/05-25, Zakopane (PL), pp.42-42, 2019

Kategoria A Plus

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