Synthesis and Magnetic Properties of the Core-Shell Fe3O4/CoFe2O4 Nanoparticles

Balaev, D. A.; Semenov, S. V.; Dubrovskii, A. A.; Krasikov, A. A.; Popkov, S. I. S. S. Yakushkin, V. L. Kirillov, and O. N. Mart’yanov Physics Of The Solid State. doi:10.1134/s1063783420020043

The Fe3O4/CoFe2O4 nanoparticles with a core–shell structure with an average size of 5 nm have been obtained by codeposition from the iron and cobalt chloride solutions. An analysis of the magnetic properties of the obtained system and their comparison with the data for single-phase Fe3O4 (4 nm) and CoFe2O4 (6 nm) nanoparticles has led to the conclusion about a noticeable interaction between the soft magnetic (Fe3O4) and hard magnetic (CoFe2O4) phases forming the core and shell of hybrid particles.