V. G. Kolesnikova, V. D. Salnikov, A. S. Omelyanchik, V. V. Rodionova
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Study of Magnetic Interactions in a Composite with a Mixture of γ-Fe2O3 and CoFe2O4 Nanoparticles
Magnetic interactions in composites promising for biomedical applications were studied. The composites were based on a piezoactive PVDF matrix filled with various systems of particles: hard magnetic CoFe2O4 nanoparticles, a mixture of soft magnetic γ-Fe2O3 and hard magnetic CoFe2O4 nanoparticles, and a mixture of CoFe2O4 and BaTiO3 particles. The study was made by the IRM–DCD and FORC methods. It was determined that the presence of a soft magnetic phase in the composite leads to an increase in the magnetic interaction fields from ∼1300 Oe (for composites containing CoFe2O4 particles) to ∼1500 Oe (for composites containing a mixture of hard and soft magnetic nanoparticles) and to the formation of two main magnetic phases in the composite.
期刊介绍：
Bulletin of the Russian Academy of Sciences: Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It presents full-text articles (regular, letters to the editor, reviews) with the most recent results in miscellaneous fields of physics and astronomy: nuclear physics, cosmic rays, condensed matter physics, plasma physics, optics and photonics, nanotechnologies, solar and astrophysics, physical applications in material sciences, life sciences, etc. Bulletin of the Russian Academy of Sciences: Physics focuses on the most relevant multidisciplinary topics in natural sciences, both fundamental and applied. Manuscripts can be submitted in Russian and English languages and are subject to peer review. Accepted articles are usually combined in thematic issues on certain topics according to the journal editorial policy. Authors featured in the journal represent renowned scientific laboratories and institutes from different countries, including large international collaborations. There are globally recognized researchers among the authors: Nobel laureates and recipients of other awards, and members of national academies of sciences and international scientific societies.
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