Evaluation of Fe-nitrides, -borides and -carbides for enhanced magnetic fluid hyperthermia with experimental study of α''-Fe.sub.16./sub.N.sub.2./sub. and ε-Fe.sub.3./sub.N nanoparticles

0566223 - FZÚ 2024 RIV US eng J - Journal Article
Dirba, I. - Chandra, C.K. - Ablets, Y. - Kohout, J. - Kmječ, T. - Kaman, Ondřej - Gutfleisch, O.
Evaluation of Fe-nitrides, -borides and -carbides for enhanced magnetic fluid hyperthermia with experimental study of α''-Fe₁₆N₂ and ε-Fe₃N nanoparticles.
Journal of Physics D-Applied Physics. Roč. 56, č. 2 (2023), č. článku 025001. ISSN 0022-3727. E-ISSN 1361-6463
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GF22-10035K
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : magnetic fluid hyperthermia * power dissipation * iron nitrides * iron borides * iron carbides * iron oxides * Mossbauer spectroscopy
OECD category: Nano-materials (production and properties)
Impact factor: 3.4, year: 2022
Method of publishing: Open access

Alternative materials systems that have the potential to deliver enhanced heating power in magnetic fluid hyperthermia are investigated. The focus lies on systems with high magnetization phases, namely iron-nitrogen, iron-boron and iron-carbon compounds, and their performance in comparison to the conventionally used iron oxides. The heating power as a function of the AC magnetic field frequency is calculated and the particle size with the maximum specific loss power is identified. It is found that lower anisotropy results in larger optimum particle size and more tolerance for polydispersity. The effect of nanoparticle saturation magnetization and anisotropy is simulated, and a material with high magnetization but low anisotropy provides the best combination. These findings are juxtaposed with experimental results of a comparative study of alpha''-Fe16N2, epsilon-Fe3N, and iron oxides nanoparticles.
Permanent Link: https://hdl.handle.net/11104/0348056