Curie temperature control in Zn-Fe ferrite superparamagnetic nanoparticles

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abstract

The control of the Curie temperature can be used as an intrinsic safety switch for magnetic induction heating applications, such as magnetic hyperthermia, heat generation devices and heat dissipation systems. In this work we used a coprecipitation method to synthesize Zn-Fe ferrite superparamagnetic nanoparticles (ZnxFe3-xO4: x= 0, 0.15, 0.25, 0.35, 0.50, 0.65, 0.75, 0.85, 1) to tune their Curie temperature. The produced ZnxFe3-xO4 nanoparticles present diameters below 15 nm and crystallite sizes ranging from 10 to 4 nm, depending close to linearly on the Zn relative content. The ZnxFe3-xO4 nanoparticles saturation magnetization is highly dependent on the Zn relative content, having a maximum around the Zn0.25Fe2.75O4 composition. Finally, we propose an optimized composition range of these Zn-Fe ferrite superparamagnetic nanoparticles for near room temperature self-regulated heating napplications.

keywords

MAGNETITE NANOPARTICLES; HYPERTHERMIA; COPRECIPITATION

subject category

Materials Science; Physics

authors

Horta, AC; André, P; Amaral, JS; Amaral, S; Amorim, CO

our authors

foto Carlos Amorim

Carlos Amorim

Assistant Researcher
foto João Cunha de Sequeira Amaral

João Cunha de Sequeira Amaral

Assistant Researcher

Groups

G2 - Photonic, Electronic and Magnetic Materials
G6 - Virtual Materials and Artificial Intelligence

Projects

Collaboratory for Emerging Technologies, CoLab (EMERGING TECHNOLOGIES)

CICECO - Aveiro Institute of Materials (UIDB/50011/2020)

CICECO - Aveiro Institute of Materials (UIDP/50011/2020)

Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)

acknowledgements

This work is financed by Portugal 2020 through European Regional Development Fund (ERDF) in the frame of CENTRO2020 in the scope of the project CICECO - Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020 & LA/P/0006/2020, and in the scope of LISBOA-01-0247-FEDER-039985/POCI-01-0247-FEDER-039985, LA/P/0037/2020, UIDP/50025/2020, and UIDB/50025/2020 of the Associate Laboratory Institute of Nanostructures, Nanomodelling and Nano-fabrication - i3N, financed by national funds through the FCT/MEC (PIDDAC). FCT is also acknowledged for grant 2020.05415.BD (A. C. Horta).

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Publication Details

type
Journal Article
year
2024
journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
volume
610
publisher
ELSEVIER
issn
0304-8853
isbn
1873-4766
digital object identifier
10.1016/j.jmmm.2024.172497
web of science article identifier
WOS:001313160500001

Journal Metrics (JCR 2019)

Journal Impact Factor
2.717
Journal Impact Factor (5 yrs)
2.723
category normalized journal percentile
54.977

Citations

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