Structural, Electrical, Dielectric, and Magnetic Properties of Cd2+ Substituted Nickel Ferrite Nanoparticles. (10th February 2016)

• Record Type: Journal Article
• Authors: Devmunde, B. H.; Raut, A. V.; Birajdar, S. D.; Shukla, S. J.; Shengule, D. R.; Jadhav, K. M.
• Other Names: Schneider Raphael Academic Editor.
• Is Part Of: Journal of nanoparticles. Volume 2016(2016)
• Publication Date: 2016-02-10
• Subjects: Nanoparticles -- Periodicals; 620.5
• DOI: 10.1155/2016/4709687
• Languages: English
• ISSNs: 2314-484X

Abstract

Abstract : In the present investigation structural, electric, magnetic, and frequency dependent dielectric properties ofN i 1 - x C d x F e 2 O 4 ferrite nanoparticles (NPs) (wherex = 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 inN i 1 - x C d x F e 2 O 4 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 (T C ) from 860°C to 566°C with increasing Cd 2+ contentx inN i 1 - x C d x F e 2 O 4 NPs were determined from AC-Susceptibility. Activation energyΔ E ranges within 0.03~0.15 eV. Decreasing magnetic saturationM s, coercivityH c, and magneton numbern B values show the effect on nonmagnetic Cd 2+ ions over magnetic Ni 2+ and Fe ions.