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Registration Number

0223U000699, 0121U110014 , R & D reports

Title

Nano- and biohybrid composites as advanced components of magnetically controlled systems with targeted localization and heat action

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Head

Tovstolytkin Oleksandr I., Доктор фізико-математичних наук

Registration Date

19-01-2023

Organization

Institute of Magnetism NAS of Ukraine and MES of Ukraine

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  Research object: magnetic nanoparticles of ferrites with various structural types and biohybrid composites "bacterium-nanoparticles"; structural, morphological and magnetic parameters of nanoparticles and composites. Subject of research: ways to physical parameters controlling of developed nanomaterials, features of their interaction with magnetic fields, methods of controlling processes of localization and thermal action. During the second stage of the work, the regularities of the influence of the chemical composition on the magnetic properties and thermal efficiency of delafossite ferrite nanoparticles were investigated. Comprehensive magnetic and calorimetric studies of NaFeO2 nanoparticles and magnetic liquids based on them revealed a close connection between the magnetic characteristics of MNPs and the heating properties of liquids. The advantageous combination of the magnetic characteristics of the studied MNPs, such as the Curie temperature and the blocking temperature (600 and 445 K, respectively) and the low coercive force at room temperatures (50Oe), which is half the maximum amplitude of the AMF used for heating the liquid, create the conditions for effective use of NaFeO2 nanoparticles in magnetic hyperthermia and remote temperature control. An approach has been developed that allows you to determine the size distribution function of nanoparticles based on the analysis of magnetic characteristics. The fruitfulness of this approach for obtaining the size distribution function of nanoparticles for AFe2O4 nanopowders (A = Ni, Zn, Co) is shown.

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Borynskiy Vladyslav Yu.
Gorobets Oksana Yu.
Derecha Dmytro O.
Dukhota Liliia I.
Samorskiy Vadim O.
Krаvets Anаtolii F.
Kuzmak Orest M
Nevdacha Vitaliy V.
Polek Taras I.
Semenova Yuliya Serhiivna
Stezkiv Yuriy P.
Tovstolytkіn Olexandr I.
Trotschenkov Yuriy M
Hrebtov Arkadiy O.
Sharai Irina Viktorоvna

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2023-01-19