Open AccessAbstract P-7: NdFeCo-based Nanoparticles for Biomedical Applications
Author(s) -
Vadim Yu. Samardak,
S Azon,
Aleksei Yu. Samardak,
Е. К. Папынов,
Alexander S. Samardak,
Aleksei Ognev
Publication year - 2021
Publication title -
international journal of biomedicine
Language(s) - English
Resource type - Journals
eISSN - 2158-0529
pISSN - 2158-0510
DOI - 10.21103/ijbm.11.suppl_1.p7
Subject(s) - high resolution transmission electron microscopy , crystallite , coercivity , materials science , nanoparticle , microstructure , cobalt , chemical engineering , nanotechnology , cobalt oxide , ferromagnetism , magnetic hysteresis , phase (matter) , ferromagnetic material properties , crystallography , transmission electron microscopy , magnetization , composite material , metallurgy , chemistry , organic chemistry , physics , quantum mechanics , magnetic field , engineering , condensed matter physics
Background: The multifunctional nanoparticles can be promising antitumor materials. The results of a study of synthesized NdFeCoB oxide nanoparticles (NPs) as a basis for drug transportation systems are presented. In the next step, the NPs can be coated by a multifunctional gel shell. Methods: NPs, the composition of NdFexCo1-xB (where x =0, 0.05, 0.1, 0.2, 0.3, 0.4, and 0.5), were synthesized by a Pechini-type sol-gel method. The synthesis allows tuning of NPs magnet properties by manipulating the microstructure and phase composition. NPs were studied by XRD, SEM, TEM, HRTEM, and VSM. Results: SEM images show that the average size of NPs changed from 280 nm (for x = 0) up to 416 nm (for x = 0.1 – 0.5). At TEM images the NPs of the sample without cobalt (x = 0) have an elongated shape (Fig 1a). Diffraction patterns showed that the NPs consist of single crystal or ordered crystallites. NPs with cobalt mainly consist of crystallites with a size of about 20-50 nm. There are also areas with a complex-grained microstructure. Hysteresis loops and first-order reversal curve analysis indicated that the NPs were ferromagnetic whose coercivity, squareness ratio, and magnetic interactions changed significantly with the cobalt contents.