Gram-Scale Synthesis of Fe<sub>3</sub>N Nanoparticles via a One-Pot Thermal Decomposition Route: Implications for Magnetic Fluid Hyperthermia Applications
ε-Fe3N nanoparticles were produced in gram-scale quantities using a one-pot thermal decomposition route, yielding monodisperse particles with an average diameter of 13.5 nm. We thoroughly investigated the structure, surface chemistry, size distribution, and magnetism using in situ high-temperature X-ray diffraction, X-ray photoelectron spectroscopy, high-resolution TEM, Mössbauer spectroscopy, dynamic light scattering, AC magnetometry, and temperature-dependent magnetometry. The room-temperature saturation magnetization of 128 A·m2/kg significantly exceeds that of conventionally used iron oxides and results in an impressive heating performance reaching a specific absorption rate of several kW/g with 508 W/g within biological safety limits which are the highest values reported to-date for iron nitride nanoparticles. The measured magnetocrystalline anisotropy constant of 133.9 kJ/m3 is in very good agreement with density functional theory calculations demonstrating the quality and convergence of the experimental and theoretical results. This work positions ε-Fe3N nanoparticles as a potential sustainable material without critical or toxic elements for magnetic fluid hyperthermia and other applications that would benefit from much increased magnetization.
Authors
- Sandra Forg (ORCID: https://orcid.org/0000-0003-2036-1818)
- Amit Chanda (ORCID: https://orcid.org/0000-0001-9681-0312)
- Oliver Gutfleisch (ORCID: https://orcid.org/0000-0001-8021-3839)
- Yevhen Ablets (ORCID: https://orcid.org/0000-0001-8556-3766)
- Leopoldo Molina‐Luna (ORCID: https://orcid.org/0000-0002-9412-8093)
- F. Plazaola (ORCID: https://orcid.org/0000-0002-0081-8131)
- Imants Dirba (ORCID: https://orcid.org/0000-0002-5335-2152)
- Regine von Klitzing (ORCID: https://orcid.org/0000-0003-0555-5104)
- Jan P. Hofmann (ORCID: https://orcid.org/0000-0002-5765-1096)
- Wolfgang Donner (ORCID: https://orcid.org/0000-0001-9269-4473)
- Esmaeil Adabifiroozjaei (ORCID: https://orcid.org/0000-0002-5095-2419)
- Sun-Myung Kim (ORCID: https://orcid.org/0009-0004-0927-1752)
- H. Srikanth (ORCID: https://orcid.org/0000-0002-2541-7000)
- Tomáš Kmječ (ORCID: https://orcid.org/0000-0002-9739-1612)
- Lenka Kubíčková (ORCID: https://orcid.org/0000-0001-8928-764X)
- Bo Zhao (ORCID: https://orcid.org/0009-0007-5933-8427)
- Hongbin Zhang (ORCID: https://orcid.org/0000-0002-1035-8861)
- José Ángel García (ORCID: https://orcid.org/0000-0002-2198-9095)
- I. Orue
- David Koch (ORCID: https://orcid.org/0000-0002-6841-9962)
- Hongrui Kang
- Shaik Najma
Institutions
- University of the Basque Country (ES)
- Charles University (CZ)
- University of South Florida (US)
- Elekta (Switzerland) (CH)
- Technische Universität Darmstadt (DE)
- Instituto de Ciencia de Materiales de Sevilla (ES)
- Institute of Molecular Functional Materials (CN)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- Yukhnovskii Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine (UA)
- Science and Technology on Surface Physics and Chemistry Laboratory (CN)
- Manufacturing Advocacy & Growth Network (United States) (US)
- Austrian Centre for Electron Microscopy and Nanoanalysis (AT)
Publication Details
- Journal
- ACS Applied Nano Materials
- Published
- 2025-09-25
- DOI
- https://doi.org/10.1021/acsanm.5c03148
- Citations
- 2
- Primary Topic
- ZnO doping and properties
- Type
- article
- Field-Weighted Citation Impact
- 1.04