Modulation of Magnetic Heating via Dipolar Magnetic Interactions in Monodisperse and Crystalline Iron Oxide Nanoparticles
Citations Over TimeTop 10% of 2014 papers
Abstract
In the pursuit of controlling the heat exposure mediated by magnetic nanoparticles, we provide new guidelines for tailoring magnetic relaxation processes via dipolar interactions. For this purpose, highly crystalline and monodisperse magnetic iron oxide nanocrystals whose sizes range from 7 to 22 nm were synthesized by thermal decomposition of iron organic precursors in 1-octadecene. The as-synthesized nanoparticles are soft nanomagnets, showing superparamagnetic-like behavior and SAR values which progressively increase with particle size, field frequency, and amplitude up to 3.6 kW/gFe. Our data show the influence of media viscosity, particle size, and concentration on dipolar interactions and consequently on the magnetic relaxation processes related to the heat release. Understanding the role of dipolar interactions is of great importance toward the use of iron oxide nanoparticles as efficient hyperthermia mediators.
Related Papers
- → Single domain soft ferromagnetic ferrofluid suitable for intratumoural magnetic hyperthermia(2023)9 cited
- → Advanced thermo-mechanical analysis in the magnetic hyperthermia(2017)15 cited
- → Preparation of Dy‐ferrite Ferrofluids and Magnetochemical Studies on the Superparamagnetism(2001)
- Preparation of PMAA-coated Dysprosium Ferrite Ferrofluids and Study on the Superparamagnetism(2002)
- Preparation of PMAA-coated Dysprosium Ferrite Ferrofluids and Study on the Superparamagnetism(2002)