Publications in Scientific Journals:
V. Giap, N. Hanh, D. Linh, R. Grössinger, P. Weinberger, E. Schafler, M. Zehetbauer:
"Monodispersed nanocrystalline Co1-xZnxFe2O4 particles by forced hydrolysis: Synthesis and characterization";
Journal of Magnetism and Magnetic Materials,
Monodispersed nanocrystalline Co1-xZnxFe2O4 particles by forced hydrolysis: Synthesis and characterization
G.V. Duong a, N. Hanh a, D.V. Linh a, R. Groessinger b, P. Weinberger c, E. Schafler d and M. Zehetbauer d
a Faculty of Chemical Engineering, Hanoi University of Technology, No.1 Dai Co Viet, Hanoi, Vietnam
b Institute of Solid State Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10, A-1040 Vienna, Austria
c Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163, A-1060 Vienna, Austria
d Department of Materials Physics, Faculty of Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
Zinc-substituted cobalt ferrites, Co1-xZnxFe2O4, were for the first time successfully prepared by forced hydrolysis method. The obtained materials are single phase, monodispersed nanocrystalline with an average grain size of about 3 nm. These materials are superparamagnetic at room temperature and ferrimagnetic at temperature lower than the blocking temperature. When the zinc substitution increases from x=0 to 0.4, at 4.2 K, the saturation magnetization increases from 72.1 to 99.7 emu/g. The high saturation magnetization of these samples suggests that this method is suitable for preparing high-quality nanocrystalline magnetic ferrites for practical applications.
Nanocrystalline; Ferrite; Superparamagnetism; Forced hydrolysis method; Zinc substitution; Hysteresis loop
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
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Created from the Publication Database of the Vienna University of Technology.