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

Autor:	Hazarika KP; Nanomagnetism Group, Department of Physics, National Institute of Technology Nagaland Dimapur 797103 Nagaland India jpborah@rediffmail.com., Borah JP; Nanomagnetism Group, Department of Physics, National Institute of Technology Nagaland Dimapur 797103 Nagaland India jpborah@rediffmail.com.
Jazyk:	angličtina
Zdroj:	RSC advances [RSC Adv] 2023 Feb 08; Vol. 13 (8), pp. 5045-5057. Date of Electronic Publication: 2023 Feb 08 (Print Publication: 2023).
DOI:	10.1039/d2ra07924k
Abstrakt:	Various researchers have provided considerable insight into the fundamental mechanisms behind the power absorption of single-domain magnetic nanoparticles (MNPs) in magnetic hyperthermia applications. However, the role of all parameters pertinent to magnetic relaxation continues to be debated. Herein, to explore the role of magnetic anisotropy with the site selective substitution related to magnetic relaxation has generally been missing, which is critically essential in respective of hyperthermia treatment. Our study unravels contradictory results of rare earth (RE) interaction effects in ferrite to that of recently reported literature. Despite this, rare earth atoms have unique f-block properties, which significantly impact the magnetic anisotropy as well as the relaxation mechanism. Here, we use appropriate Eu doping concentration in magnetite and analyze its effect on the matrix. Furthermore, a positive SAR can effectively reduce the relative dose assigned to a patient to a minimal level. This study indicates that the introduction of Eu ion positively influenced the heating efficiency of the examined magnetite systems. Competing Interests: The authors have no conflicts of interest. (This journal is © The Royal Society of Chemistry.)
Databáze:	MEDLINE
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