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Information × Registration Number 0220U100316, 0119U100469 , R & D reports Title Interparticle interactions and dissipative processes in systems of nanoscale magnetics and composites on their basis. popup.stage_title Head Tovstolytkin Oleksandr I., Доктор фізико-математичних наук Registration Date 15-01-2020 Organization Institute of Magnetism of the National Academy of Sciences of Ukraine and Ministry of Education and Sciences of Ukraine popup.description2  Effect of zinc substitution on magnetic properties and AC heating characteristics of Ni1-xZnxFe2O4 (x = 0 – 1) as well as (La,Sr)MnO3 nanoparticles with substitutions in manganese and lanthanum sublattices has been studied. Magnetic parameters, such as saturation magnetization, Curie temperature, specific loss power, have been determined for the samples. A good agreement between the values of Curie temperature and maximal heating temperature under AC magnetic field is found for the Ni1-xZnxFe2O4 samples with x = 0.75. It is shown that the increase in substitution level in LSMO (for both Fe and Sm substitutions) results in lowering the Curie temperature TC and weakening heating efficiency under the action of AC magnetic field. The results demonstrate that the action of AC field causes effective heating of nanoparticles at temperatures lower than TC, while heating efficiency becomes strongly reduced at higher temperatures. Thus, complex substitutions based on suitable combinations of substituting elements may serve as an efficient tool to “softly” tune the maximal temperature achieved during the AC magnetic field induced heating of nanoparticles, which is important for the application of these materials as heat mediators for self-controlled magnetic nanohyperthermia. Product Description popup.authors Krаvets Anаtolii F. Kuzmak Orest M. Kulik Mykhailo M. Lytvynenko Iaryna M. Nevdacha Vitalii V. Pohorilyi Anаtolii M. Polishchuk Dmytro M. Polek Taras I. popup.nrat_date 2020-04-02 Close