International Journal of Iron & Steel Society of Iran

International Journal of Iron & Steel Society of Iran

Structure and Magnetic Properties of (Mg0.2Ti0.2Zn0.2Cu0.2Fe0.2)3O4 High Entropy Oxides Synthesized by Different Iron Oxides

Document Type : Research Paper

Author
T. Isfahani
Materials Engineering Group, Golpayegan College of Engineering, Isfahan University of Technology, Golpayegan, Iran
10.22034/ijissi.2025.2056169.1320
Abstract
 The introduction of high-entropy material has provided the possibility of efficiently producing low-cost advanced materials with several unique properties suitable for industries. High-entropy materials have gained significant interest because they can be tailored to have functional properties. Among the highentropy material are the high entropy oxides. The objective of this study was to synthesize (Mg0.2Ti0.2Zn0.2Cu0.2Fe0.2)3O4 high entropy oxides (HEO) using different iron sources of Fe 2O3, Fe3O4, and Fe2O3/Fe3O4 mixture and to study their structure and magnetic properties. Solid state synthesis method was used to obtain (Mg0.2Ti0.2Zn0.2Cu0.2Fe0.2)3O4 using low-cost raw materials and different iron sources. The XRD diffraction patterns along with the Rietveld analysis indicated that for the three iron source(s), a pure single-phase Fd3̅m spinel structure was obtained after the heat treatment at 1000 ℃ for 24 hours. The SEM images and elemental MAP analysis indicated that the powders were agglomerated with semispherical morphology and the constituent elements were uniformly distributed. Magnetic test results obtained from the VSM test revealed that the magnetic properties are severely influenced by the iron source used for the synthesis of the (Mg0.2Ti0.2Zn0.2Cu0.2Fe0.2)3O4 HEO samples. The HEO samples obtained using the Fe 3O4 sample had better magnetic properties (Ms= 13.93, Mr= 4.39, and Hc=350) compared to the other two samples. 
Keywords
(Mg0.2Ti0.2Zn0.2Cu0.2Fe0.2)3O4 High entropy oxide
Fe2O3
Fe3O4
Structure
Magnetic property
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