R. R. Chilwar

Bio: R. R. Chilwar is an academic researcher. The author has contributed to research in topics: Crystallite & Nanoparticle. The author has an hindex of 1, co-authored 2 publications receiving 1 citations.

Glycine assisted sol-gel synthesis and structural analysis of CoFe2O4 nanoparticles

Abstract: In this work, we tried to investigate the structural properties of cobalt ferrite (CoFe2O4) nanoparticles synthesized via the sol-gel auto-combustion method. The synthesis of cobalt ferrite was carried out by glycine assisted auto-ignition in the sol-gel method. The preparation conditions and sintering temperature during the synthesis creates additional phases in the respective materials, which may play an important role in several applications because of their controlled physical properties. Therefore, CoFe2O4 nanoparticles were considered as a good candidate for high-frequency applications. The X-ray diffraction study of CoFe2O4 nanoparticles was carried out for phase purity. XRD pattern revealed the presence of Bragg's reflections which belong to the cubic spinel structure. The Miller indices (hkl) were identified using the standard method and the FWHM of the most intense peak (311) was used for the calculation of crystallite size. The crystallite size (t) was estimated using Debye-Scherrer's formula and found to be 32.16 nm which is following our expectations.

X-ray diffraction and infrared characterization of NiFe2O4 nanoparticles (NFNPs) prepared using dextrose assisted sol-gel auto-combustion technique

Abstract: In the current work, we comprehensively focused upon the synthesis of NiFe2O4 nanoparticles (NFNPs) via the sol-gel auto-combustion method. Particularly in the present investigation, we deployed dextrose (C6H12O6) as an organic compound that works as a fuel in the sol-gel synthesis of NFNPs. The as-prepared samples of NFNPs were characterized for structural properties through XRD. The crystallite size (t), the lattice constant (a), unit cell volume (V), and X-ray density dX of NFNPs was determined using XRD data. Crystallite size was obtained through Debye-Scherrer’s formula indicates the nanocrystalline nature of the prepared NFNPs sample. The infrared spectroscopy (IR) was carried out for investigating the presence of phases and the function group analysis in the NFNPs. The IR has confirmed the formation of ferrite phase in dextrose assisted sol-gel synthesized NFNPs as we report the intrinsic vibrations belongs to the tetrahedral and octahedral sites.