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Mater Sci Nanotechnol 2017
Volume 1 Issue 3 Magnetic Materials 2017
Page 99
October 09-10, 2017 London, UK
International Conference on
The effect of alkali concentration on the structural
and magnetic properties of Mn-ferrite nanoparticles
prepared via the co-precipitation method
Somayeh Pourbafarani
Isfahan University, Iran
C hemistry plays an important role in the development of
novel nano-structural materials, and a simple control of
solution chemistry can lead to specific changes in crystallite
properties. One of the chemical techniques in the synthesis of
nanoparticles is co-precipitation. The advantages of using this
method are that the structural and morphological properties
of nanoparticles can be varied by controlling the chemical
and physical parameters of the reaction medium such as the
alkali concentration, reaction temperature, molar ratio of salts,
ionic strength of aqueous medium, and reaction time. In this
work, MnFe2O4 nano particles were synthesized using the co-
precipitation method under two different NaOH concentration
settings as reaction agents at 355 K (82ºC). Structural and
morphological properties of the nanoparticles were examined
using X-ray diffraction and a scanning electron microscope. The
decrease of NaOH concentration led to the increase of particle
size, more crystallinity and a narrower particle size distribution.
The results were evaluated from a chemical point of view and
were based on the supersaturation level, which was influenced
by alkali concentration. It was concluded that the higher NaOH
concentration led to a more rapid nucleation and more random
cation distribution. The magnetic properties of the nanoparticles
were consistent with the structural and morphological properties
of the particles.
Materials Science and Nanotechnology