FEATURES OF THE STRUCTURE OF MAGNETIC NANOPOWDERS OF IRON OXIDES IN VARIOUS METHODS OF THEIR SYNTHESIS
Authors
Abilkosimova Gulnoza Mukhitdinovna, Hafizova Nigina Rakhmatullayeva, Aronbaev Sergey Dmitrievich, Aronbaev Dmitry Markielovich
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The article presents the results of obtaining iron oxide nanoparticles with magnetic properties – maghemite and magnetite, precipitated from solutions of ferrous and trivalent iron salts using various technological techniques. Depending on the deposition conditions, magnetic nanopowders corresponding to the composition of solid solutions of magnetite-maghemite were obtained. By methods of scanning electron microscopy and X-ray phase analysis, calculation of the parameters of the elementary cells of the crystal lattices of magnetite and maghemite, it is shown that the synthesis conditions affect the size and shape of nanoparticles and the degree of their aggregation. It was found that monophasic magnetite and maghemite do not form during chemical deposition, a solid solution of mixed composition precipitates.
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Authors
Abilkosimova Gulnoza Mukhitdinovna, Hafizova Nigina Rakhmatullayeva, Aronbaev Sergey Dmitrievich, Aronbaev Dmitry Markielovich
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