Micelle based synthesis of cobalt ferrite nanoparticles and its characterization using Fourier Transform Infrared Transmission Spectrometry and Thermogravimetry

Rana, Subhasis; Philip, John; Raj, Baldev

doi:10.1016/j.matchemphys.2010.06.029

Cited by 167 publications

(43 citation statements)

References 29 publications

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“…These band positions are found to be in agreement with the characteristic infrared absorption bands of cobalt ferrite nanocrystals [38]. The ν 1 absorption band in the spectra has not appeared properly for the sample annealed at relatively lower temperature (200°C and 400°C) which reflects the presence of local structural disorder due to finite size effect (surface effect) [39]. This fact is in agreement with XRD, (c) which shows the low crystallinity (broadening of the peak) in the sample.…”

Section: Ft-ir Analysissupporting

confidence: 64%

Rietveld analysis of XRD patterns of different sizes of nanocrystalline cobalt ferrite

et al. 2013

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Nanocrystalline cobalt ferrite powder has been synthesised by citrate precursor and co-precipitation methods. Structural characterization of the samples has been carried out using powder X-ray diffraction, Fourier transform infrared spectroscopy (FT-IR) and field emission scanning electron microscope (FE-SEM). Distribution of cations among the two interstitial sites (tetrahedral and octahedral sites) has been estimated by analysing the powder X-ray diffraction patterns by employing Rietveld refinement technique, and the results reveal the existence of samples as a mixed type spinel with cubic structure. It is observed that the distribution of cations and structural parameters are strongly dependent on synthesis method and annealing temperature. The vibrational modes of the octahedral and tetrahedral metal complex in the sample have been examined using FT-IR in the wave number range of 390 to 750 cm, and it shows an absorption band within this range, which confirms the spinel structure of the sample. The existence of constituents in the sample, i.e., Co, Fe and O has been authenticated using energy dispersive spectrum with the help of a FE-SEM.

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Section: Ft-ir Analysissupporting

confidence: 64%

Rietveld analysis of XRD patterns of different sizes of nanocrystalline cobalt ferrite

et al. 2013

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“…[14][15][16][17] Cobalt ferrite is a partially inverse spinel with formula (Co x Fe 1-x )[Co 1-x Fe 1+x ]O 4 , formed by oxygen atoms in a closed packing structure where, Co 2+ and Fe 3+ occupy either tetrahedral or octahedral sites. [18][19][20][21][22] Several researchers have reported on Ti, Y, Gd, Pr, Zn, Ni and Dy doped cobalt ferrite. [23][24][25][26][27][28] The present work is focused on the effects of Al 3+ doping on the structural, morphological and elastic properties of aluminium ion doped cobalt ferrite obtained via sol-gel method.…”

Section: Introductionmentioning

confidence: 99%

Al and PEG Effect on Structural and Physicochemical Properties of CoFe2O4

Mostaghni

Abed

2017

Mat. Res.

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In this work, pure and Alumina doped cobalt ferrite nanoparticles CoFe 2−x Al x O 4 (for x = 0.44) have been synthesized by the sol gel method. The influence of alumina doping on the morphological and mechanical properties of CoFe 2 O 4 nano-particles were investigated by means of X-ray powder diffraction (XRD) and rietveld analysis. XRD analysis confirmed that the single phase formation of pure nano particles with the expected cubic inverse spinel structure with Fd3m space group and without any impurity phase. Alumina doping were led to a decrease in the crystallite size, lattice parameter, elastic constants and magnitude of moduli. It is explained on the basis of the replacement of Fe ions with half-filled d-shell (3d 5 ) and larger radius by Al 3+ ions with a completely filled shell (2p 6 ) and smaller radius.

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“…4a shows the comparative FTIR plots of the three systems. The common peak observed at 1630 cm −1 for all three samples corresponds to the H-O-H scissoring from free or absorbed water molecules [26]. The intense absorption peaks around 578 cm −1 for all three samples are attributed to Fe O or Co O vibrations [27].…”

Section: Effect Of Oleic Acid Concentrationmentioning

confidence: 87%

Fatty acid as structure directing agent for controlled secondary growth of CoFe2O4 nanoparticles to achieve mesoscale assemblies: A facile approach for developing hierarchical structures

Saikia

Kaushik

Sen

et al. 2016

Applied Surface Science

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Micelle based synthesis of cobalt ferrite nanoparticles and its characterization using Fourier Transform Infrared Transmission Spectrometry and Thermogravimetry

Cited by 167 publications

References 29 publications

Rietveld analysis of XRD patterns of different sizes of nanocrystalline cobalt ferrite

Rietveld analysis of XRD patterns of different sizes of nanocrystalline cobalt ferrite

Al and PEG Effect on Structural and Physicochemical Properties of CoFe2O4

Fatty acid as structure directing agent for controlled secondary growth of CoFe2O4 nanoparticles to achieve mesoscale assemblies: A facile approach for developing hierarchical structures

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