Characterization of cobalt ferrite magnetic nanoparticles for magnetic hyperthermia application

In presented study we describe the magnetic properties of cobalt ferrite nanoparticles with the size of around 5 nm prepared by co-precipitation chemical way. To verify the application potential of CoFe2O4 magnetic nanoparticles, the measurements to determine the magnitude of the magnetic moment, th...

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Main Authors: Nagy, Ľuboš, Zeleňáková, Adriana, Szűcsová, Jaroslava, Mielnik, Natalia, Hrubovčák, Pavol
Format: Conference Proceeding
Language:English
Subjects:
Cobalt ferrites
Hyperthermia
Magnetic induction
Magnetic measurement
Magnetic moments
Magnetic properties
Magnetization reversal
Nanoparticles
Relaxation time
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Zeleňáková, Adriana
Szűcsová, Jaroslava
Mielnik, Natalia
Hrubovčák, Pavol
description In presented study we describe the magnetic properties of cobalt ferrite nanoparticles with the size of around 5 nm prepared by co-precipitation chemical way. To verify the application potential of CoFe2O4 magnetic nanoparticles, the measurements to determine the magnitude of the magnetic moment, the pre-relaxation constant, the size of their cores were realized. The results of TEM measurement confirm the presence of spherical isolated particles with average size of 3,8 nm. The DC magnetization measured in ZFC and FC regimes confirm the presence of superparamagnetic state with blocking temperature of around 50K. The AC susceptibility data were fitted to Neel-Arrhenius and Vogel-Fulcher models and the value of energy barrier to magnetization reversal EA/kB=225 K and pre-relaxation constant associated with relaxation time of τ0=51.10-08 s were obtained. The analysis of magnetic measurements also shows that they exhibit properly magnetic properties for their potential use in magnetic particle hyperthermia.
doi_str_mv 10.1063/5.0135839
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source American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)
subjects Cobalt ferrites
Hyperthermia
Magnetic induction
Magnetic measurement
Magnetic moments
Magnetic properties
Magnetization reversal
Nanoparticles
Relaxation time
title Characterization of cobalt ferrite magnetic nanoparticles for magnetic hyperthermia application
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