Magnetic Properties of MFeCrO{sub 4} (M = Co/Ni) Prepared by Solution Combustion Method

Single phase MFeCrO{sub 4} (M = Co/Ni) nanosized samples are prepared by solution combustion method using glycine as fuel. Lattice parameter obtained after Rietveld refinement of the powder x-ray diffraction pattern of CoCrFeO{sub 4} and NiCrFeO{sub 4} samples are 8.374 and 8.325 Å and corresponding...

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Bibliographic Details
Published in:Journal of superconductivity and novel magnetism 2019-09, Vol.32 (9)
Main Authors: Thomas, Nygil, Sudheesh, V. D., Choudhary, Harish Kumar, Sahoo, Balaram, Nair, Swapna S., Lakshmi, N., Sebastian, Varkey
Format: Article
Language:English
Subjects:
CHROMATES
COBALT COMPOUNDS
FOURIER TRANSFORMATION
GLYCINE
INFRARED SPECTRA
IRON COMPOUNDS
LATTICE PARAMETERS
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETIZATION
MATERIALS SCIENCE
NANOSTRUCTURES
NICKEL COMPOUNDS
RELAXATION
SPECTROSCOPY
SPINELS
X-RAY DIFFRACTION
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Summary:Single phase MFeCrO{sub 4} (M = Co/Ni) nanosized samples are prepared by solution combustion method using glycine as fuel. Lattice parameter obtained after Rietveld refinement of the powder x-ray diffraction pattern of CoCrFeO{sub 4} and NiCrFeO{sub 4} samples are 8.374 and 8.325 Å and corresponding crystallite sizes are 40 and 27 nm, respectively. FTIR spectra of both samples show tetrahedral and octahedral metal oxygen bond stretching peaks at 596 and 488 cm{sup −1}, indicating spinel phase formation. DC magnetisation study indicates that both samples are ferrimagnetic at room temperature, with CoCrFeO{sub 4} having a higher value of saturation magnetisation. Mössbauer spectra indicate the presence of magnetic relaxation in the samples. Also, the strength of interaction with nearest neighbour Fe{sup 3+} cations is higher in NiCrFeO{sub 4}.
ISSN:1557-1939
1557-1947