Aug 2026· Vietnam Journal of Science and Technology· Vol 64· 0 citations
Abstract
Cubic spinel ferrite nanoparticles manganese ferrite (MnFe2O4) are synthesized using the co-precipitation method. The structural parameters of all the samples have been studied through X-ray diffraction (XRD) patterns. Field effect scanning electron microscopy micrographs (FESEM) show the formation of highly dense forms of nanoparticles along with spherical morphology. But, at molarities of 1.3 M and 1.6 M, elongated particles were seen. The variation in bond distances with an increase in the molar concentration of NaOH could be attributed to more diffusion of Mn2+ ions and a deviation in the number of oxygen atoms in MnFe2O4. Raman spectra show that A1g band wavenumber shifts towards a higher wavenumber up to 1.3 M. This suggests an increase in bond length and lattice distortion, which is consistent with XRD results. Fourier transform infrared (FTIR) studies indicate that Mn2+ shifts from tetrahedral to octahedral site with an increase in molar concentration. FTIR results demonstrate that the molar concentration of NaOH significantly affects shape of nanoparticles, bond lengths, and amount of Mn2+ ions on the tetrahedral sites of MnFe2O4 nanoparticles.
In the present work, Sm3+ doped spinel cobalt ferrite (CoFe2O4) nanoparticles [CoFe2-xSmxO4 (x = 0.00 to 0.10, with an increment of 0.02)] were fabricated using glycine assisted sol-gel self-ignition method, to understand the effect of Sm3+. The single phase, cubic spinel ferrite phase of the prepared NPs was character...
Swapnil A. Bhagat, Kajal A. Gurav, S. Wani et al.· Asian Journal of Chemistry· 0 citations
In the present investigation, Fe and Al co-doped NiO nanocomposites were fabricated by chemical co-precipitation process using Polyvinylpyrrolidone (PVP) as a capping agent. The aluminium was fixed at 5 mol % and the iron concentration was varied from 1, 3 and 5 mol %. XRD coupled with the Williamson-Hall analysis conf...
B. Ayesha, M. Reddy, B. Sreenivasulu et al.· Journal of Materials Science· 1 citation
In this study, Co0.7Cd0.3Fe2O4 nanoparticles were synthesized using the sol-gel auto-combustion method by varying the metal nitrate-to-fuel (MN/F) ratio, with dextrose serving as the fuel. X-ray diffraction (XRD) analysis confirmed the formation of a single-phase cubic spinel structure. The lattice parameter initially...
R. Parlikar, S. Wani, Smita More et al.· Asian Journal of Chemistry· 0 citations
Magnesium ferrite (MgFe2O4) nanoparticles have attracted significant interest due to their excellent magnetic, electrical, and optical properties, which make them suitable for applications in magnetic storage devices, microwave absorbers, catalysts, sensors, and optoelectronic systems. In the present study, nanocrystal...
Muskan, Akanksha Vashisth, Ritu et al.· Journal of materials science...· 0 citations
Calcium‐substituted nickel ferrite nanoparticles with composition CaxNi1−xFe2O4 (x = 0.1, 0.3, and 0.5) were synthesized using a sol–gel auto‐combustion method to examine the effect of Ca2+ substitution on their structural, morphological, vibrational, optical, dielectric, and electrical properties. XRD confirmed the fo...
Sarita, M. S. Rulaniya, Upendra Kumar et al.· Journal of The American Cera...· 2 citations
Manganese Sulfide (MnS) is a wide band gap (3.7 eV) p-type semiconductor comprising three crystalline (cubic rock-salt MnS, cubic zincblende MnS, and hexagonal wurtzite MnS structures) polymorphs. Pristine and copper-doped MnS nanoparticles have been synthesized using a facile chemical co-precipitation method. Crystall...
