Facile Method to Tune the Particle Size and Thermal Stability of Magnetite Nanoparticles

Singh, L. Herojit; Pati, S. S.; Sales, Maria J. A.; Guimarães, Edi Mendes; Oliveira, A. C.; Garg, V. K.

doi:10.5935/0103-5053.20150207

Cited by 5 publications

(2 citation statements)

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“…The average particle sizes estimated by XRD show that heat treatment had no significant influence on this parameter within the uncertainty limits. Thermally induced particle size growth was not observed, which is often suggested in the literature [35]. Specifically, strong stability of particles' size studied in series is seen when it is calculated and plotted every 50 • C (Table 3, Figure 5).…”

Section: X-ray Diffraction (Xrd)supporting

confidence: 63%

Influence of Atomic Doping on Thermal Stability of Ferrite Nanoparticles—Structural and Magnetic Studies

et al. 2020

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In this paper, a series of experiments are reported where ferrite nanoparticles were synthesized with different substitution percentages (5, 10, 15, or 20%) of Fe2+ by Co2+, Mn2+, or Ni2+ ions. Afterwards, the prepared nanoparticles were thermally treated between 50 and 500 °C in air for 24 h in order to observe how doping influences the oxidation process induced by temperature elevation and access to O2. Nanoparticles were imaged before and after thermal treatment by transmission electron microscopy and were analyzed by X-ray diffraction, vibrating sample magnetometry, and Mössbauer spectroscopy. Presented studies reveal that the amount and kind of doped transition metals (of replaced Fe2+) strongly affect the oxidation process of ferrite nanoparticles, which can govern the application possibility. Each transition element suppresses the oxidation process in comparison to pure Fe-oxides, with the highest impact seen with Ni2+.

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Section: X-ray Diffraction (Xrd)supporting

confidence: 63%

Influence of Atomic Doping on Thermal Stability of Ferrite Nanoparticles—Structural and Magnetic Studies

et al. 2020

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“…In recent years, the synthesis of magnetic iron oxide nanoparticles (particularly magnetite -Fe 3 O 4 ) has been intensively explored with a view to biomedical applications such as targeted drug delivery, magnetic resonance imaging (MRI), and magnetic hyperthermia [1][2][3][4][5][6][7][8] . Multifunctional materials are attractive because they may combine properties, which allow manipulation chemical functionalities, playing a key role in different applications.…”

Section: Introductionmentioning

confidence: 99%

Luminescent and Magnetic Properties of Fe3O4@SiO2:phen:Eu3+

2017

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Magnetite was doped with rare earth ions (europium) to produce core-shell materials with both magnetic and luminescent properties, i.e., a magnetic Fe 3 O 4 oxide core and a SiO 2 :phen:Eu 3+ shell. The resulting material was analyzed by X-ray powder diffraction and transmission electron microscopy, and subjected to magnetic and luminescence emission measurements. All the synthesized materials exhibited superparamagnetic behavior and luminescence emission. The magnetic behavior of Fe 3 O 4 and luminescence emission of SiO 2 :phen:Eu 3+ of the materials were compared to precursors.

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Optimization of the Precipitated Magnetite, Stoichiometry and Composites for Enhanced Stabilization

Singh

Garg

2020

Materials Horizons: From Nature to Nanomaterials

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Facile Method to Tune the Particle Size and Thermal Stability of Magnetite Nanoparticles

Cited by 5 publications

References 0 publications

Influence of Atomic Doping on Thermal Stability of Ferrite Nanoparticles—Structural and Magnetic Studies

Influence of Atomic Doping on Thermal Stability of Ferrite Nanoparticles—Structural and Magnetic Studies

Luminescent and Magnetic Properties of Fe3O4@SiO2:phen:Eu3+

Optimization of the Precipitated Magnetite, Stoichiometry and Composites for Enhanced Stabilization

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