Structural and magnetic properties variation of manganese ferrites via Co-Ni substitution

Structural and magnetic properties variation of manganese ferrites via Co-Ni substitution

[Display omitted] •MnCoxNixFe2−2xO4 nanoferrites were synthesized by co-precipitation technique.•The crystallite size is found in the range 27–35 nm.•The saturation magnetization was raised up to 52 emu/g.•These ferrites may have potential applications in switching applications. In this study Co-Ni...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials Vol. 474; pp. 98 - 103
Main Authors: Arshad, Muhammad, Asghar, M., Junaid, Muhammad, Warsi, Muhammad Farooq, Naveed Rasheed, M., Hashim, M., Al-Maghrabi, M.A., Khan, Muhammad Azhar
Format: Journal Article
Language:English
Published: Amsterdam Elsevier B.V 15-03-2019
Elsevier BV
Subjects:
Crystallites
Dielectric properties
Ferrites
FTIR
Magnetic properties
Magnetic saturation
Manganese
Nickel
SEM
Spectral bands
Spinel ferrites
X ray powder diffraction
X-ray diffraction
XRD
SEM
XRD
FTIR
Dielectric properties
Spinel ferrites
Magnetic properties
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Summary:[Display omitted] •MnCoxNixFe2−2xO4 nanoferrites were synthesized by co-precipitation technique.•The crystallite size is found in the range 27–35 nm.•The saturation magnetization was raised up to 52 emu/g.•These ferrites may have potential applications in switching applications. In this study Co-Ni co-doped nanocrystalline manganese ferrites were fabricated via co-precipitation method. The annealing of as prepared nanoferrites was done at 950 °C for 7 h. The powder X-ray diffraction (XRD) confirmed that all samples possessed cubic spinel structure. The crystallite size was determined by Scherrer’s equation that lies in the range of 27–35 nm. The spectral analysis confirmed bending and stretching of bonds at octahedral (B) and tetrahedral (A) sites. The spectral bands were shifted towards the longer wavelength side and these indicate the incorporation of dopants cations (Co-Ni). The magnetic parameters were measured from the M-H loops of nanoferrites. With the increase of Co-Ni contents, the saturation magnetization (Ms) increased up to x = 0.15 and then it decreased. The dielectric properties of all compositions were studied in 1 MHz–3 GHz range and were discussed in the light of Debye-type reduction phenomenon by following the Koop’s theory. The dielectric and magnetic behavior evaluation suggested that synthesized ferrites are suitable for microwave devices fabrication.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2018.10.141