PVA-doped NiNdxFe2-xO4 nanoferrites: Tuning of dielectric and magnetic properties

•The properties of NdNiFe2O4 nanoferrites were tuned with a doping of PVA.•Presence of Nd3+ ions in NiFe2O4 causes a large change on the dielectric properties.•Turing the magnetisation and coercivity with soft ferromagnetic nature. Polyvinyl alcohol (PVA)-blended spinel phase NiNdxFe2-xO4 nanoferrit...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2019-09, Vol.485, p.105-111
Main Authors: Sakthipandi, K., Lenin, N., Rajesh Kanna, R., Sabah Afroze, A., Sivabharathy, M.
Format: Article
Language:English
Subjects:
Coercivity
Dielectric loss
Dielectric properties
Dielectric property
Diffraction patterns
Ferromagnetism
Magnetic properties
Magnetic saturation
Magnetism
Magnetization
Microwave absorption
Nanoferrites
Polyvinyl alcohol
Saturation magnetization
Spinel
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Summary:•The properties of NdNiFe2O4 nanoferrites were tuned with a doping of PVA.•Presence of Nd3+ ions in NiFe2O4 causes a large change on the dielectric properties.•Turing the magnetisation and coercivity with soft ferromagnetic nature. Polyvinyl alcohol (PVA)-blended spinel phase NiNdxFe2-xO4 nanoferrites were successfully prepared with a different composition (x = 0.01, 0.03, 0.05, 0.07, and 0.09). The spinel cubic structure was revealed from X-ray diffraction pattern. These nanoferrites showed insulating behavior with an enhanced energy bandgap when compared with PVA-unblended nanoferrites. The obtained dielectric loss and real and complex dielectric constants were in the microwave region (frequency ∼2.9–5.95 GHz). Pseudocapacitance and resistive behavior were explored from impedance analysis. The magnetization hysteresis plot of nanoferrites showed a soft ferromagnetic nature. It was found that reduction in saturation magnetization of NiNdxFe2-xO4 nanoferrites obtained by PVA doping has the strong microwave absorption capacity.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2019.04.074