Liquid-Phase Synthesis of Nickel Nanoparticles stabilized by PVP and study of their structural and magnetic properties

Liquid-Phase Synthesis of Nickel Nanoparticles stabilized by PVP and study of their structural and magnetic properties

Mandeep Singh1*, Manish Kumar2, František Št?pánek1, Pavel Ulbrich3, Pavel Svoboda4, Eva Santava5, M.L. Singla2

1Laboratory of Chemical Robotics, Department of Chemical Engineering, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic

2Material Research Division, Central Scientific Instruments Organization (CSIO), Chandigarh 160030, India

3Department of Biochemistry and Microbiology, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic

4Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 120 00 Prague 2, Czech Republic

5Institute of Physics ASCR, Na Slovance 2, 18221 Prague 8, Czech Republic

Adv. Mater. Lett., 2011, 2 (6), pp 409-414

DOI: 10.5185/amlett.2011.4257

Publication Date (Web): Apr 08, 2012

E-mail: mandeep.singh@vscht.cz 

Abstract


We have synthesized nickel nanoparticles using nickel chloride as a precursor in ethanol using PVP (Poly Vinyl Pyrrolidone) as a surfactant and hydrazine hydrate as reducing agent at 60 °C in a facile manner. The structural analysis showed that particles are face-centered cubic and monodisperse within the PVP matrix with average size about 3 nm. The magnetic analysis shows the superparamagnetism of the single-domain nickel nanoparticles with the blocking temperature (Tb) exists around 14 K with clear hysteretic effect observation below this blocking temperature.

Keywords

Nanoparticles, magnetic materials, electron microscopy, superparamagnetism

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