• Reena Dhyani
• R. C. Srivastava

In the present study, nanocomposites of Co0.5Cu0.5Fe2O4 (CCF)/Polypyrrole (Ppy) (25, 50 and 75wt% of Ppy) were prepared by in-situ oxidative polymerization method. The X-ray diffraction (XRD) pattern confirmed the formation of cubic spinel structure of Co0.5Cu0.5Fe2O4/Ppy nanocomposites without any additional impurity phase. SEM micrographs of the nanocomposites suggest the spherical shape of Co0.5Cu0.5Fe2O4 nanoparticles which are expected to be embedded in continuous porous structure of Ppy matrix. The elemental compositions of synthesized samples were estimated by elemental dispersive X-ray analysis (EDX) technique. The hysteresis curve measured at room temperature indicates that increasing weight percentage of Ppy reduced the magnetic behaviour of Co0.5Cu0.5Fe2O4 nanoferrites. The saturation magnetization (Ms) and coercivity (Hc) were in the range of 53.99±0.05-14.10±0.05 emu.g-1 and 959.10±0.05-388.45±0.05 Oe respectively. The electron paramagnetic resonance (EPR) spectra of Co0.5Cu0.5Fe2O4/Ppy nanocomposites were recorded at room temperature, which confirmed the existence of unpaired electrons with decrease in g value from 2.68±0.04 to 2.01±0.04 by increasing the Ppy content. The narrowing of peak-to-peak line width (∆Bpp) from 310.66±0.02 to 49.78±0.02 mT was observed with increasing the weight percentage of Ppy in Co0.5Cu0.5Fe2O4/Ppy nanocomposites.

Nanocomposites, In-situ oxidative polymerization, Saturation magnetization, Coercivity

"Structural and Magnetic Study of Co0.5Cu0.5Fe2O4/ Polypyrrole Nanocomposites", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 1, page no.291-298, January-2019, Available :http://www.jetir.org/papers/JETIR1901G40.pdf

"Structural and Magnetic Study of Co0.5Cu0.5Fe2O4/ Polypyrrole Nanocomposites", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 1, page no. pp291-298, January-2019, Available at : http://www.jetir.org/papers/JETIR1901G40.pdf