Search
Home > Issues > SearchDistinct Magnetic Properties of CoFe2O4 by Tetrahedral Mg2+ Substitution
Journal of Magnetics, Volume 27, Number 3, 30 Sep 2022, Pages 309-314
Kwang Joo Kim (Department of Physics, Konkuk University), Jongho Park (Department of Physics, Konkuk University), Jae Yun Park * 
(Department of Materials Science and Engineering, Incheon National University)
(Department of Materials Science and Engineering, Incheon National University)
Abstract
Magnetic hysteresis curves of cobalt ferrites with a fraction of cobalt being replaced by magnesium
(MgxCo1-xFe2O4) were investigated by vibrating sample magnetometry (VSM). The specimens with x ≤ 0.2 were
prepared as thin films on silicon substrates by using a sol-gel deposition process. The VSM result revealed that
the saturation magnetizations (MS) of the Mg-substituted specimens were higher than that of CoFe2O4. The
result of Raman spectral analysis suggested that the Mg-substituted specimens had higher tetrahedral Co2+
density in the spinel lattice compared to CoFe2O4. The increase in MS for MgxCo1-xFe2O4 is ascribed to two reasons,
the increase in tetrahedral Co2+ density and significant Mg2+ occupation in the tetrahedral sites.
(MgxCo1-xFe2O4) were investigated by vibrating sample magnetometry (VSM). The specimens with x ≤ 0.2 were
prepared as thin films on silicon substrates by using a sol-gel deposition process. The VSM result revealed that
the saturation magnetizations (MS) of the Mg-substituted specimens were higher than that of CoFe2O4. The
result of Raman spectral analysis suggested that the Mg-substituted specimens had higher tetrahedral Co2+
density in the spinel lattice compared to CoFe2O4. The increase in MS for MgxCo1-xFe2O4 is ascribed to two reasons,
the increase in tetrahedral Co2+ density and significant Mg2+ occupation in the tetrahedral sites.
Keywords: cobalt ferrite; magnesium, thin film; magnetic hysteresis; Raman spectroscopy
DOI: https://doi.org/10.4283/JMAG.2022.27.3.309
Full Text : PDF
