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Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite

Authorized Users Only
2019
Authors
Lakić, Mladen
Anđelković, Ljubica
Šuljagić, Marija
Vulić, Predrag
Perić, Marko R.
Iskrenović, Predrag
Krstić, Ivan
Kuraica, Milorad M.
Nikolić, Aleksandar S.
Article (Published version)
Metadata
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Abstract
Light-transmitting measurements of white light and a consequentially chosen laser beam of 655 nm propagating through citrate- and oleate-coated CoFe 2 O 4 , FeFe 2 O 4 and MgFe 2 O 4 nanoparticles under the influence of an external magnetic field were presented. New experimental settings were developed for the optical study of ferrites’ behavior in ferrofluid with the applied magnetic field strength within the 30–400 mT range. A magnetic field-induced change of light transmittance occurred and a precipitation of all studied samples was obtained. Optical investigations of ferrofluid suspensions revealed that, contrary to the linear aggregates of colloidal CoFe 2 O 4 and FeFe 2 O 4 , spheroidal aggregates were formed in the case of MgFe 2 O 4 . In all three cases, the surface modification resulted in decreased dipole–dipole interactions between ferrite cores, and thus, less precipitates were noticed. All oleate-coated nanoparticles have demonstrated weaker magnetic responses compared to ...the citrate-encapsulated samples. The aggregation of nanoparticles potentially increases cytotoxicity. Regarding non-linear clustering of MgFe 2 O 4 suspensions, it can be concluded that its excretion from the organism may likely be easier and faster when used in diagnosis and/or therapy. Therefore, more attention should be paid to the lowly toxic MgFe 2 O 4 regarding its medical application. © 2019

Keywords:
Aggregation / External magnetic field / Ferrofluid / Hard and soft ferrites / Spectral analysis
Source:
Optical Materials, 2019, 91, 279-285
Funding / projects:
  • Rational design and synthesis of biologically active and coordination compounds and functional materials, relevant for (bio)nanotechnology (RS-172035)
  • Diagnostics and Optimization of Plasma Sources Important for Applications (RS-171034)

DOI: 10.1016/j.optmat.2019.03.031

ISSN: 0925-3467

WoS: 000470938800040

Scopus: 2-s2.0-85063323726
[ Google Scholar ]
6
7
URI
https://linkinghub.elsevier.com/retrieve/pii/S0925346719301995
https://vinar.vin.bg.ac.rs/handle/123456789/8114
Collections
  • Radovi istraživača
Institution/Community
Vinča
TY  - JOUR
AU  - Lakić, Mladen
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
AU  - Vulić, Predrag
AU  - Perić, Marko R.
AU  - Iskrenović, Predrag
AU  - Krstić, Ivan
AU  - Kuraica, Milorad M.
AU  - Nikolić, Aleksandar S.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0925346719301995
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8114
AB  - Light-transmitting measurements of white light and a consequentially chosen laser beam of 655 nm propagating through citrate- and oleate-coated CoFe 2 O 4 , FeFe 2 O 4 and MgFe 2 O 4 nanoparticles under the influence of an external magnetic field were presented. New experimental settings were developed for the optical study of ferrites’ behavior in ferrofluid with the applied magnetic field strength within the 30–400 mT range. A magnetic field-induced change of light transmittance occurred and a precipitation of all studied samples was obtained. Optical investigations of ferrofluid suspensions revealed that, contrary to the linear aggregates of colloidal CoFe 2 O 4 and FeFe 2 O 4 , spheroidal aggregates were formed in the case of MgFe 2 O 4 . In all three cases, the surface modification resulted in decreased dipole–dipole interactions between ferrite cores, and thus, less precipitates were noticed. All oleate-coated nanoparticles have demonstrated weaker magnetic responses compared to the citrate-encapsulated samples. The aggregation of nanoparticles potentially increases cytotoxicity. Regarding non-linear clustering of MgFe 2 O 4 suspensions, it can be concluded that its excretion from the organism may likely be easier and faster when used in diagnosis and/or therapy. Therefore, more attention should be paid to the lowly toxic MgFe 2 O 4 regarding its medical application. © 2019
T2  - Optical Materials
T1  - Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite
VL  - 91
SP  - 279
EP  - 285
DO  - 10.1016/j.optmat.2019.03.031
ER  - 
@article{
author = "Lakić, Mladen and Anđelković, Ljubica and Šuljagić, Marija and Vulić, Predrag and Perić, Marko R. and Iskrenović, Predrag and Krstić, Ivan and Kuraica, Milorad M. and Nikolić, Aleksandar S.",
year = "2019",
abstract = "Light-transmitting measurements of white light and a consequentially chosen laser beam of 655 nm propagating through citrate- and oleate-coated CoFe 2 O 4 , FeFe 2 O 4 and MgFe 2 O 4 nanoparticles under the influence of an external magnetic field were presented. New experimental settings were developed for the optical study of ferrites’ behavior in ferrofluid with the applied magnetic field strength within the 30–400 mT range. A magnetic field-induced change of light transmittance occurred and a precipitation of all studied samples was obtained. Optical investigations of ferrofluid suspensions revealed that, contrary to the linear aggregates of colloidal CoFe 2 O 4 and FeFe 2 O 4 , spheroidal aggregates were formed in the case of MgFe 2 O 4 . In all three cases, the surface modification resulted in decreased dipole–dipole interactions between ferrite cores, and thus, less precipitates were noticed. All oleate-coated nanoparticles have demonstrated weaker magnetic responses compared to the citrate-encapsulated samples. The aggregation of nanoparticles potentially increases cytotoxicity. Regarding non-linear clustering of MgFe 2 O 4 suspensions, it can be concluded that its excretion from the organism may likely be easier and faster when used in diagnosis and/or therapy. Therefore, more attention should be paid to the lowly toxic MgFe 2 O 4 regarding its medical application. © 2019",
journal = "Optical Materials",
title = "Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite",
volume = "91",
pages = "279-285",
doi = "10.1016/j.optmat.2019.03.031"
}
Lakić, M., Anđelković, L., Šuljagić, M., Vulić, P., Perić, M. R., Iskrenović, P., Krstić, I., Kuraica, M. M.,& Nikolić, A. S.. (2019). Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite. in Optical Materials, 91, 279-285.
https://doi.org/10.1016/j.optmat.2019.03.031
Lakić M, Anđelković L, Šuljagić M, Vulić P, Perić MR, Iskrenović P, Krstić I, Kuraica MM, Nikolić AS. Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite. in Optical Materials. 2019;91:279-285.
doi:10.1016/j.optmat.2019.03.031 .
Lakić, Mladen, Anđelković, Ljubica, Šuljagić, Marija, Vulić, Predrag, Perić, Marko R., Iskrenović, Predrag, Krstić, Ivan, Kuraica, Milorad M., Nikolić, Aleksandar S., "Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite" in Optical Materials, 91 (2019):279-285,
https://doi.org/10.1016/j.optmat.2019.03.031 . .

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