Influence of pH and fuels on the combustion synthesis, structural, morphological, electrical and magnetic properties of CoFe{sub 2}O{sub 4} nanoparticles

Journal Article · Sun Nov 15 00:00:00 EST 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.04.008· OSTI ID:22475998

Shanmugavani, A. ^[1]; Selvan, R. Kalai ^[1]; Layek, Samar ^[2]; Vasylechko, Leonid ^[3]; Sanjeeviraja, C. ^[4]

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1. Solid State Ionics and Energy Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore 641 046 (India)
2. Department of Physics, Indian Institute of Technology, Kanpur 208016 (India)
3. Semiconductor Electronics Department, Lviv Polytechnic National University, 12 Bandera Street, Lviv 79013 (Ukraine)
4. Department of Physics, Alagappa Chettiar College of Engineering and Technology, Karaikudi 630 004 (India)

Nanocrystalline spinel cobalt ferrite particles are synthesized by simple combustion method using aspartic acid and glycine as fuels. The single phase cubic structure of CoFe{sub 2}O{sub 4} is revealed through X-ray diffraction analysis (XRD). Further the Rietveld refinement confirms the formation of inverse spinel structure of CoFe{sub 2}O{sub 4}. The characteristic functional groups of Co–O and Fe–O are identified from Fourier Transform Infrared (FT-IR) analysis. Uniform distribution of of nearly spherical particles with the size range of 40–80 nm is identified through field emission scanning electron microscope (FESEM) images. The calculated DC conductivity is 1.469 × 10{sup −7} and 2.214 × 10{sup −8} S cm{sup −1}, for CoFe{sub 2}O{sub 4} synthesized using aspartic acid and glycine, respectively. The dielectric behavior obeys the Maxwell–Wagner interfacial polarization. The ferromagnetic behavior of CoFe{sub 2}O{sub 4} is identified using VSM analysis and the calculated coercivity is 27 Oe and saturation magnetization is 68 emu/g.

• OSTI ID: 22475998
• Journal Information: Materials Research Bulletin, Vol. 71; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
COBALT COMPOUNDS
CRYSTAL STRUCTURE
CRYSTALS
DIELECTRIC MATERIALS
DISTRIBUTION
FERRITES
FOURIER TRANSFORMATION
GRAIN BOUNDARIES
INFRARED SPECTRA
MAGNETIC PROPERTIES
MAGNETIZATION
NANOPARTICLES
NANOSTRUCTURES
PH VALUE
SATURATION
SCANNING ELECTRON MICROSCOPY
SPINELS
SYNTHESIS
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION