Synthesis and Characterization of FeO/Ni0.5Mn0.5Fe2O4 Nano-Composite

Abstract

FeO/Ni0.5Mn0.5Fe2O4 nano-composite was prepared using glycine assisted combustion method. The structure, morphology, chemical composition and magnetization of the as prepared composite was studied using X-ray diffraction, infrared spectroscopy, scanning electron micrographs, energy dispersive X-ray and a vibrating sample magnetometer. The structural parameters such as crystallite size, lattice constant, unit cell volume and theoretical density of the constituents of composite (FeO and Ni0.5Mn0.5Fe2O4) have been determined. X-ray diffraction and infrared measurements confirm formation of both Ni0.5Mn0.5Fe2O4 and FeO phases. SEM technique was used to investigate the morphology characteristics of the investigated solid. It was found that the as synthesized composite consisted of polyhedron, spongy, homogeneous and fragile materials. Also, energy dispersive X-ray technique showed the concentrations of O, Ni, Fe and Mn species involved in the prepared composite specimen from the uppermost surface to the bulk layers indicating to the elements gradient. The saturation magnetization (Ms), remanence magnetization (Mr) and coercivity (Hc) of the as synthesized composite were 71 emu/g, 24 emu/ g and 272 Oe, respectively.

One Pot Synthesis, Surface, and Magnetic Properties of Ni–NiO@C Nanocomposites

“…The Raman band at 370 cm −1 corresponds to one-phonon (1P) transverse optical (TO) and surface optical (SO), while the band at 544 cm −1 corresponds to (1P) longitudinal optical (LO) of NiO vibrational modes [28,29]. Moreover, The Raman bands at 696 and 1070 cm −1 correspond to two-phonon (2P) 2TO and 2LO of NiO vibrational modes, respectively [4,5]. The bands at 103 and 209 cm −1 that were found in the Raman spectra of the S1 and S2 samples could be attributed to the zone-boundary phonon mode [30].…”

“…This coexistence additionally influences the particle size and shape, leading to an influence on the chemical and physical characteristics of the components. Therefore, multi-component systems have more comprehensive applications than single-component systems [1][2][3][4]. Multi-component-based magnetic systems exhibit novel and unique properties depending on the size, structure, and composition of the components.…”

First-Principles Calculations on the Half-Metallicity of Rock-Salt Ferromagnetic FeO

“…In 2011, nanoparticles composed of magnetite and wustite were successfully synthesized using the pulsed laser irradiation [7]. In 2014, FeO/Ni 0.5 Mn 0.5 Re 2 O 4 nano-composite was prepared using glycine assisted combustion method [8]. In 2015, CoFe 2 O 4 /FeCo-FeO core-shell nanoparticles were prepared [9].…”