Structural investigation of chemically synthesized Ferrite magnetic nanomaterialsстатья
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 11 апреля 2019 г.
Аннотация:In recent times, interest in ferrite magnetic nanomaterials has considerably grown, mainly due to their
highly promising medical and biological applications. Spinel ferrite powder samples, with high heat
generation abilities in AC magnetic fields, were studied for their application to the hyperthermia
treatment of cancer tumors. These properties of ferrites strongly depend on their chemical composition,
ion distribution between crystallographic positions, magnetic structure and method of preparation. In
this study, crystal and magnetic structures of several magnetic spinels were investigated by neutron
diffraction. The explanation of the mechanism triggering the heat generation ability in the magnetic
materials, and the electronic and magnetic states of ferrite-spinel type structures, were theoretically
defined by a first-principles method.
Ferrites with the composition of CuxMg1-xFe2O4 have been investigated as a heat generating magnetic
nanomaterial. Atomic fraction of copper in ferrite was varied between 0 and 100% (that is, x between
0 and 1.0 with 0.2 steps), with the copper dope limit corresponding to appear a tetragonal phase.