Crystal and Magnetic Structures of Granular Powder Spinel Mn–Zn and Ni–Zn Ferrites

Some specific features of the crystal and magnetic structures of granular powder spinel-like ferrites Mn 0.160 Mg 0.404 Zn 0.448 Fe 2 O 4 , Mn 0.676 Zn 0.227 Fe 0.09 Fe 2 O 4 , Mn 0.5792 Zn 0.2597 Fe 0.1612 Fe 2 O 4 , and Ni 0.32 Zn 0.68 Fe 2 O 4 have been studied by neutron diffraction. It has been...

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Bibliographic Details
Published in:Physics of the solid state 2018-09, Vol.60 (9), p.1727-1732
Main Authors: Argymbek, B. K., Kichanov, S. E., Kozlenko, D. P., Lukin, E. V., Morchenko, A. T., Dzhabarov, S. G., Savenko, B. N.
Format: Article
Language:English
Subjects:
BOND LENGTHS
CATIONS
Chemical bonds
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
Diffraction
EXPERIMENTAL DATA
Ferrimagnetism
FERRITES
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
Magnetism
Manganese
MANGANESE COMPOUNDS
NEUTRON DIFFRACTION
Nickel
NICKEL COMPOUNDS
Physics
Physics and Astronomy
Solid State Physics
SPACE GROUPS
Spinel
SPINELS
Unit cell
ZINC COMPOUNDS
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Summary:Some specific features of the crystal and magnetic structures of granular powder spinel-like ferrites Mn 0.160 Mg 0.404 Zn 0.448 Fe 2 O 4 , Mn 0.676 Zn 0.227 Fe 0.09 Fe 2 O 4 , Mn 0.5792 Zn 0.2597 Fe 0.1612 Fe 2 O 4 , and Ni 0.32 Zn 0.68 Fe 2 O 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 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.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783418090020