Structural, Magnetic and Photoluminiscent Properties of Strontium Ferrite Nanoparticles synthesized using Citrate precursor method
Structural, Magnetic and Photoluminiscent Properties of Strontium Ferrite Nanoparticles synthesized using Citrate precursor method
Rakesh kumar Singh1, A. Yadav2, R. S. Yadav3 , A. C. Pandey3
1Deptt. of Physics, Patna Women’s College, Patna University
2School of Pure Sciences (PG section), Nalanda Open University, Patna
3Nanophosphor Centre, University of Allahabad
ABSTRACT
Strontium ferrite nanoparticles were synthesized
using chemical based citrate precursor method. In this
method, nitrates of divalent metal, trivalent metal iron
and citric acid were taken in molar ratio. Citrate
precursor was annealed at temperature 450 0C and 650
0C in a muffle furnace that lead to ferrite powder after
crushing. The powder samples were characterized
using X-ray diffraction (XRD), Vibrating sample
magnetometer (VSM) and Photoluminiscence
spectrometer(PL). The mean particle size observed
was 15.7 nm at 450 0C and 20.3 nm at 650 0C. The
lattice constant was found to increase from 10.663Å to
10.667Ǻ . Coercivity and Retentivity are also found to
increase but saturation magnetization was found to
decrease.
Photoluminisence (PL) property of this sample
was studied using 225nm, 250nm and 330nm
excitation wavelength radiation source. The PL
spectrum was obtained in visible range only by
excitation through 225 nm and 250 nm radiation source