Structural and magnetic properties of MgFe_2O_4 nanopowder synthesized via co‑precipitation route

摘要

Mg ferrite was successfully synthesized by adopting a simple co-precipitation route. A physical property of Mg ferritehas been investigated employing XRD, FTIR, SEM, EDS, AFM and Raman spectroscopic techniques. The XRD results indicatedthe formation of single phase spinel ferrite with crystalline size of 36 nm. FTIR results confrmed ferrite tetrahedral(580 cm~(−1)) and octahedral sites (430 cm~(−1)) metal oxygen vibrations. The Raman result revealed the well defined Ramanactive modes of synthesized sample. Scanning electron microscopic (SEM) studies revealed nano crystalline nature of thesample. An elemental composition of the sample was studied by energy dispersive spectroscopy (EDS). Crystallite size,X-ray density, hopping length, and magnetic properties of the product are also reported. AFM provides surface roughness.The magnetic hysteresis curves clearly indicate the soft nature of the prepared nanoferrite. The Raman spectra showsfive Raman active modes (A_(1g) + E_g + 3F_(2g)) which are expected in the spinel structure and Raman spectra has a very goodagreement with reported data. Various magnetic parameters such as saturation magnetization (M_s), and remanence (M_r)and coerciviy (H_c) are obtained from the hysteresis loops.