An Investigation on Magnetic-Interacting Fe{sub 3}O{sub 4} Nanoparticles Prepared by Electrochemical Synthesis Method
- Nuclear Science and Technology Research Institute (NSTRI), Materials and Nuclear Research School (Iran, Islamic Republic of)
- Islamic Azad University, Department of Physics, Faculty of Science, Central Tehran Branch (Iran, Islamic Republic of)
Naked, polyvinylchloride (PVC)-coated, and polyethylene glycol (PEG)-coated Fe{sub 3}O{sub 4} nanoparticles (NPs) with an equivalent average particle size of 10 nm were prepared through an electrochemical synthesis method. The structural and magnetic properties were investigated systematically. The X-ray diffraction study coupled with the Rietveld refinement of XRD data showed that samples are crystallized in cubic spinel structure with space group referred to as Fd3m. The nature of DC magnetization versus field M (H) plot for sample resembles qualitatively with ferromagnetic (FM) systems. The AC-susceptibility data obtained at different frequencies confirmed the presence of a frequency-dependent freezing temperature. Based on the interparticle interaction strength and phenomenological models (Néel–Brown, Vogel–Fulcher, and critical slowing down), the magnetic dynamic behavior of nanoparticles was characterized. By fitting the experimental data with mentioned models, the possibility existence of superparamagnetic and a spin-glass state at low temperatures was proposed for the samples. Also, the obtained values from fitting performance showed a coating effect on interparticle interaction for PVC- and PEG-coated Fe{sub 3}O{sub 4} nanoparticles.
- OSTI ID:
- 22773988
- Journal Information:
- Journal of Superconductivity and Novel Magnetism, Vol. 31, Issue 7; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CUBIC LATTICES
ELECTROCHEMISTRY
EXPERIMENTAL DATA
FERRITES
FREEZING
FREQUENCY DEPENDENCE
MAGNETIC PROPERTIES
MAGNETIZATION
NANOPARTICLES
PARTICLE SIZE
POLYETHYLENE GLYCOLS
PVC
SPIN GLASS STATE
SPINELS
SUPERPARAMAGNETISM
SYNTHESIS
TEMPERATURE RANGE 0065-0273 K
X-RAY DIFFRACTION