Size distribution of FeNiB nanoparticles

Lackner, P. and Pajić, Damir and Reissner, Michael and Novosel, Nikolina and Zadro, Krešo and Stoger-Pollach, M. and Babić, Emil (2014) Size distribution of FeNiB nanoparticles. European Physical Journal Web of Conferences, 75. pp. 5008-4. ISSN 2100-014X

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Two samples of amorphous nanoparticles FeNiB, one of them with SiO2 sheath around the core and one without, were investigated by transmission electron microscopy and magnetic measurements. The coating gives mean particle diameters of 4.3 nm compared to 7.2 nm for the uncoated particles. Magnetic measurements prove superparamagnetic behaviour above 160 K (350 K) for the coated (uncoated) sample. With use of effective anisotropy constant Keff – determined from hysteresis loops – size distributions are determined both from ZFC curves, as well as from relaxation measurements. Both are in good agreement and are very similar for both samples. Comparison with the size distribution determined from TEM pictures shows that magnetic clusters consist of only few physical particles.

Item Type: Article
Keywords: magnetic nanoparticles, magnetization, structure, size distribution, ternary amorphous alloys, FeNiB
Date: 3 July 2014
Subjects: NATURAL SCIENCES > Physics
Additional Information: © Owned by the authors, published by EDP Sciences, 2014. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Conference: JEMS 2013 - Joint European Magnetic Symposia ; Rhodes, Grčka, 25.-30.08.2013.
Divisions: Faculty of Science > Department of Physics
Project code: 119-1191458-1017
Publisher: EDP Sciences
Depositing User: Damir Pajić
Date Deposited: 12 Nov 2014 08:43
Last Modified: 05 Dec 2017 09:29

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