Enhancement in dielectric and magnetic properties of Mg2+ substituted highly porous super paramagnetic nickel ferrite nanoparticles with Williamson-Hall plots mechanistic view. Issue 17 (1st December 2017)

• Record Type: Journal Article
• Authors: Hirthna, ; Sendhilnathan, S.
• Is Part Of: Ceramics international. Volume 43:Issue 17(2017)
• Page Start: 15447
• Page End: 15453
• Publication Date: 2017-12-01
• Subjects: Spinel ferrites -- Mg doping -- Co-precipitation -- Electrical conductivity -- Porosity; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.08.090
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In our present investigation, we have reported the fabrication of a low-cost, magnetically separable, Highly Conductive Magnesium substituted nickel ferrite (Ni1−x Mgx Fe2 O4 with x = 0.2, 0.4, 0.6, 0.8, 1.0) nanoparticles by Simple co-precipitation method. The structural, dielectric and magnetic properties of the synthesized nanoparticles were investigated by XRD, SEM, VSM, and FTIR. XRD pattern confirms the formation of single phase face centred cubic structured nanoparticles. The crystallite size of Ni1−x Mgx Fe2 O4 was found to decrease from 28 nm to 10 nm with increase in Mg content. SEM results show the agglomerated spherical morphology. The Coercivity (Hc) and remnant Magnetization (Mr) decreases and Saturation magnetization (Ms) increases with increase in Mg content as indicated by VSM. Dielectric properties decreases and electrical conductivity increases with increasing frequency and increasing Mg concentration, this was in good agreement with the SEM, TEM and VSM studies. The mean size and strain within Ni1−x Mgx Fe2 O4 have been calculated successfully from Williamson-Hall plots.