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Structural, Electrical, Dielectric, and Magnetic Properties of Cd2+ Substituted Nickel Ferrite Nanoparticles


Affiliations
1 Vivekanand Arts, Sardar Dalipsingh Commerce and Science College, Aurangabad 431001, India
2 Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431001, India
3 Department of Physics, P.G. Research Centre, Deogiri College, Aurangabad 431001, India
 

In the present investigation structural, electric, magnetic, and frequency dependent dielectric properties of Ni1−xCdxFe2O4 ferrite nanoparticles (NPs) (where x = 0.2, 0.4, 0.6, and 0.8) prepared by sol-gel autocombustion method were studied. The crystallite size (t) (46.89∼58.40 nm) was estimated from X-ray diffraction data with the postconfirmation of single phase spinel structure. Spherical shaped, fused grain nature with intergranular diffusion in Ni1−xCdxFe2O4 NPs was observed in scanning electron micrographs. The value of loss tangent (tan δ) decreases exponentially with an increasing frequency indicating normal Maxwell-Wagner type dielectric dispersion due to interfacial polarization. Decreasing values of Curie temperature (Tc)from 860°C to 566°C with increasing Cd2+ content x in Ni1−xCdxFe2O4 NPs were determined from AC-Susceptibility. Activation energy ΔE ranges within 0.03∼0.15 eV. Decreasing magnetic saturation Ms coercivity Hc and magneton number nB values show the effect on nonmagnetic Cd2+ ions over magnetic Ni2+ and Fe ions.
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  • Structural, Electrical, Dielectric, and Magnetic Properties of Cd2+ Substituted Nickel Ferrite Nanoparticles

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Authors

B. H. Devmunde
Vivekanand Arts, Sardar Dalipsingh Commerce and Science College, Aurangabad 431001, India
A. V. Raut
Vivekanand Arts, Sardar Dalipsingh Commerce and Science College, Aurangabad 431001, India
S. D. Birajdar
Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431001, India
S. J. Shukla
Department of Physics, P.G. Research Centre, Deogiri College, Aurangabad 431001, India
D. R. Shengule
Vivekanand Arts, Sardar Dalipsingh Commerce and Science College, Aurangabad 431001, India
K. M. Jadhav
Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431001, India

Abstract


In the present investigation structural, electric, magnetic, and frequency dependent dielectric properties of Ni1−xCdxFe2O4 ferrite nanoparticles (NPs) (where x = 0.2, 0.4, 0.6, and 0.8) prepared by sol-gel autocombustion method were studied. The crystallite size (t) (46.89∼58.40 nm) was estimated from X-ray diffraction data with the postconfirmation of single phase spinel structure. Spherical shaped, fused grain nature with intergranular diffusion in Ni1−xCdxFe2O4 NPs was observed in scanning electron micrographs. The value of loss tangent (tan δ) decreases exponentially with an increasing frequency indicating normal Maxwell-Wagner type dielectric dispersion due to interfacial polarization. Decreasing values of Curie temperature (Tc)from 860°C to 566°C with increasing Cd2+ content x in Ni1−xCdxFe2O4 NPs were determined from AC-Susceptibility. Activation energy ΔE ranges within 0.03∼0.15 eV. Decreasing magnetic saturation Ms coercivity Hc and magneton number nB values show the effect on nonmagnetic Cd2+ ions over magnetic Ni2+ and Fe ions.