Role of site selective substitution, magnetic parameter tuning, and self heating in magnetic hyperthermia application: Eu-doped magnetite nanoparticles

Abstract

Various researchers have provided considerable insight into the fundamental mechanisms behind the power absorption of single-domain magnetic nanoparticles (MNPs) in magnetic hyperthermia applications.

Study of biopolymer encapsulated Eu doped Fe3O4 nanoparticles for magnetic hyperthermia application

“…The polymers may affect nucleation and growth processes, leading to larger crystallites. The observed changes in the crystal structure attributed to developed lattice strain 4 , stress, cation re-arrangement, and finite size effect 27 can be attributed to the active involvement of chitosan and dextran, which bring about structural modifications at the atomic and molecular levels. To counter this effect, the variation in dislocation density with the encapsulation of chitosan and dextran highlights the influence of the densification progression, which is sensible due to the physical characteristics of cations, their valence states, and distribution on A and B sites.…”

“…Therefore, the advancement of nanomaterials, and one notable example is stabilizing the Fe 3 O 4 (FO) nanoparticles via different dopants in the FO matrix. Following the literature, RE ions doped in an octahedral site of the Fe 3 O 4 system can stabilize and reduce the conversion possibility to maghemite or hematite 3 , 4 . Addedly, Eu-doped spinel ferrite MNPs draw significant attention, due to their biocompatibility and their unique magnetic and optical properties 1 .…”

“…The synthesizing technique for EuFO MNPs is explained thoroughly in the prior work 4 . The synthesis of Eu-doped Fe 3 O 4 MNPs coated with chitosan and dextran has followed the identical procedure outlined in the prior study 18 .…”

“…The synthesizing technique for EuFO MNPs is explained thoroughly in the prior work 4 . The synthesis of Eu-doped Fe 3 O 4 MNPs coated with chitosan and dextran has followed the identical procedure outlined in the prior study 18 . Henceforth, only pen the brief expression of the synthesizing route for chitosan and dextran-coated Eu-doped Fe 3 O 4 MNPs and it is comprehended in Fig.…”

“…Furthermore, because of the analogous ionic radii of Fe and Eu, the lesser doping concentration would not lead to the variation of the structural configuration, which pays a great deal of prominence to the researchers. This study aims to extend our research on the Eu doping of Fe 3 O 4 MNPs by introducing a coating agent (chitosan/dextran) and investigating the role of dipolar interactions and effective magnetic anisotropy in enhancing heating performance 4 . In the previous research, Eu-doped Fe 3 O 4 (EuFO) matrix with different concentrations has been studied, with a primary focus on investigating the role of site-preferred substitution to tune magnetic and structural parameters to improve the self-heating efficiency for MFH applications.…”