Carbon-Encapsulated Magnetic Nanoparticles Based on Fe, Mn, and Cr for Spintronics Applications
J. Szczytko a, P. Osewski a, M. Bystrzejewski b, J. Borysiuk c, A. Grabias c, A. Huczko b, H. Lange b, A. Majhofer a and A. Twardowski a
a Institute of Experimental Physics, Faculty of Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
b Department of Chemistry, Warsaw University, Pasteura 1, 02-093 Warsaw, Poland
c Institute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warsaw, Poland
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Received: 9 06 2007;
We succeeded in the arc-plasma synthesis of carbon-encapsulated Fe, Cr, and Mn-based nanoparticles. The transmission electron microscopy, Mössbauer spectra (of iron) and SQUID magnetometry results demonstrate that the products of the synthesis contain metals and its carbides. The nanoparticles show ferromagnetic or superparamagnetic behavior at high temperatures, which is demanded for nano-spintronics applications.
DOI: 10.12693/APhysPolA.112.305
PACS numbers: 75.20.-g, 75.75.+a, 75.20.En, 75.30.Cr, 75.50.Bb