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Solvothermally Driven Mn Doping and Clustering of Iron Oxide Nanoparticles for Heat Delivery Applications
Author(s) -
OteroLorenzo Ruth,
Fantechi Elvira,
Sangregorio Claudio,
Salgueiriño Verónica
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201505049
Subject(s) - maghemite , materials science , doping , nanoparticle , magnetite , raman spectroscopy , iron oxide nanoparticles , nanotechnology , chemical engineering , nanostructure , iron oxide , biocompatibility , optoelectronics , metallurgy , optics , physics , engineering
Direct interactions between nanoparticles of Mn‐doped magnetite or maghemite (clearly differentiated by Raman spectroscopy) grouped in spherical clusters minimize the effect related to their characteristic magnetic dead layer at the surface. Hence, the clustering process jointly with the manganese doping renders these ferrite nanostructures very attractive as displaying increased saturation magnetization, offering, consequently, outstanding values of the specific absorption rate (SAR) for heat delivery. The whole picture for bio‐related applications has been considered, with issues related to magnetic manipulation, colloidal stability, and biocompatibility.