Open AccessКристаллическая и магнитная структура гранулированных порошков Mn-Zn- и Ni-Zn-ферритов шпинелей
Author(s) -
Б.К. Аргымбек,
С.Е. Кичанов,
Д. П. Козленко,
Е.В. Лукин,
А.Т. Морченко,
С.Г. Джабаров,
Б. Н. Савенко
Publication year - 2018
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2018.09.46384.055
Subject(s) - ferrimagnetism , crystallography , spinel , crystal structure , neutron diffraction , materials science , octahedron , bond length , magnetic moment , tetrahedron , group (periodic table) , magnetization , chemistry , condensed matter physics , metallurgy , physics , magnetic field , organic chemistry , quantum mechanics
ome specific features of the crystal and magnetic structures of granular powder spinel-like ferrites Mn_0.160Mg_0.404Zn_0.448Fe_2O_4, Mn_0.676Zn_0.227Fe_0.09Fe_2O_4, Mn_0.5792Zn_0.2597Fe_0.1612Fe_2O_4, and Ni_0.32Zn_0.68Fe_2O_4 have been studied by neutron diffraction. It has been established that the crystal structure of all the studied compounds has a cubic symmetry with space group Fd $$\bar 3$$ 3 ¯ m . Ferrimagnetic ordering is observed in all the studied structures. Based on the experimental data, the unit cell parameters and interatomic bond lengths of the studied compounds are determined alongside with the distribution of cations between octahedral and tetrahedral crystallographic positions in their cubic crystal structure. Corresponding average magnetic moments are calculated for different positions in their cubic structure. Some structural mechanisms of the formation of magnetic properties depending on the level of doping and the size of powder grains are discussed.