Structural, Optical and Surface Morphological
Studies of Nanosized NiFe2O4 Particles Synthesized
By Sol-Gel Method
R. Kesavamoorthi a and Dr. C. Ramachandra Rajab
Department of Physics, Government Arts College (Auto), Kumbakonam-612 001, Tamilnadu, India.
Abstract
Nickel
Ferrite
particles
were
successfully synthesized at room temperature
using Sol-Gel method. The samples are
annealed at various temperatures of 350°C
and 550°C respectively. The characterization
studies of the synthesized ferrite particles was
carried out using XRD, SEM, FTIR, UVVisible spectrum, and EDX spectrum. The
synthesized ferrite particles can be used for
very good material for Electronic devices
technology, Magnetic Resonance Imaging,
Magnetic data storage, Biomedicine and solidstate gas sensing applications.
Keywords: Nickel Ferrite, Sol-Gel, XRD, SEM, EDX,
FTIR, and UV-Visible.
Introduction
Nanosized spinel ferrite particles, a kind of soft
magnetic materials with structural formula of
MFe2O4 (M = divalent metal ion, e.g. Mn, Mg, Zn, Ni,
Co, Cu, etc.). Spinel ferrites in nanoform are one of
the most attracting classes of materials due to their
interesting and important properties such as low
saturation magnetic moment and low magnetic
transition temperature, etc [1]. Electrical and magnetic
properties of ferrites depend upon the nature of the
ions, their charges and their distribution among
tetrahedral (A) and octahedral (B) sites [2]. Among
various ferrites, which form a major constituent of the
magnetic ceramic materials, nanosized nickel ferrite
possesses attractive properties for the application as
soft magnets, core materials in power transformers
and low loss materials at high frequencies. This ferrite
is a cubic-spinel in which eight units of NiFe2O4 go
into a unit cell of the spinel structure. Half of the ferric
ions preferentially fill the tetrahedral sites (A-sites)
and the others occupy the octahedral sites (B-sites).
Thus the compound can be represented by the formula
(Fe3+) A [Ni2+Fe3+]B O42-. The synthesis of spinel ferrite
nanoparticles has been intensively studied in the
recent years and the principal role of the preparation
conditions on the morphological and structural
features of the ferrites is discussed.
Synthesis of NiFe2O4 Nanoparticles
Nickel ferrite nano particles were synthesized
from nitrate precursor’s solution. All chemicals and
solvents were obtained from AR grade and used without
further purification. The Nickel Nitrate [Ni
(NO3)].6H2O and Iron Nitrate [Fe (NO3)2] .9H2O as
starting materials were weighed in 1:1 proportions. Each
starting materials was separately weighed and made a
solution with an independent concentration of 0.2 M.
XRD Analysis of Nickel Ferrite
Powder X-ray diffraction patterns were
recorded using Bruker X-ray diffractometer and it
as operated at 45kV and 30 mA (X-ray source: Cu
Kα, Wavelength 1.54439 Å). The samples are
scanned in continuous normal scan mode form 10 70°. The analysis of the peak positions and the
relative intensities of the diffracted lines of
synthesized Nickel ferrite were compared with
XRD pattern of Kludeep chand et al: (2002) [3].
Particle size of the each sample was calculated
with strongest diffraction peak (311).
Counts
C1
1600
400
0
10
20
30
40
50
60
70
Position [°2Theta]
Fig. 1: XRD spectrum of NiFe2O4 annealed at 550°C
[1] Prasoon Pal Singh: “NiFe2O4 Nanoparticles as
a Gas Sensing materials by precipitation method”
ISSN 2249-6149 Vol -5 -2012.
[2] Binu P Jacob, Ashok Kumar Influence of
preparation method on structural and magnetic
Properties of NiFe2 O4 nanoparticles” Bull. Matter
Sci.- Vol 34- No 7-2011 pp. 1345-1350.
[3] Sukhdeepsingh, N K Radhan, R K Kotnla &
Kuldeep chand verma “Nanosize dependent
electrical and magnetic properties of NiFe2O4
ferrite” Indian Journal of Pure and Applied
PhysicsvVol.50, Oct 2012, pp.739-743.