Preparation and Characterization of Magnetic HEO with the Composition (Al<sub>0.2</sub>Co<sub>0.2</sub>Cr<sub>0.2</sub>Ni<sub>0.2</sub>Fe<sub>0.2</sub>X<sub>0.2</sub>)<sub>3</sub>O<sub>4</sub>; X= Mg, Zn
A ceramic material consisting of two distinct compositions, (Al<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.2</inf>Co<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.2</inf>Cr<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.2</inf>Ni<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.2</inf>Fe<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.2</inf>Zn<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.2</inf>)<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf>O<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> and (Al<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.2</inf>Co<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.2</inf>Cr<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.2</inf>Ni<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.2</inf>Fe<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.2</inf>Mg<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.2</inf>)<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf>O<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</inf>, was synthesized using solid-state synthesis of the powder, followed by cold pressing and cold isostatic pressing. Pressed green bodies were sintered at two different temperatures (1223 K and 1423 K). The study examined the effects of composition and sintering temperature on the structural and magnetic properties of the materials, utilizing X-ray diffraction (XRD) analysis and SQUID magnetometry. High-entropy oxide samples with a single-phase spinel structure (space group Fd-3m) were prepared. Analysis of the magnetic properties revealed that the samples exhibited soft magnetic characteristics, indicating potential applications in the development of reversible magneto-active composites, such as magnetorheological elastomers.
Authors
- Dušan Galusek (ORCID: https://orcid.org/0000-0001-5995-8780)
- Jana Valúchová (ORCID: https://orcid.org/0000-0001-6932-6744)
- M. Majerová (ORCID: https://orcid.org/0000-0002-5054-5135)
- Peter Švančárek (ORCID: https://orcid.org/0000-0002-4262-4087)
- A. Dvurečenskij (ORCID: https://orcid.org/0000-0002-9458-0899)
- Anna Prnová (ORCID: https://orcid.org/0000-0002-1713-3171)
- M. Škrátek (ORCID: https://orcid.org/0000-0002-6287-266X)
- Daniel Drdlík (ORCID: https://orcid.org/0000-0003-4545-7779)
- T. Sabadková
- M. Švančárková
Institutions
- Central European Institute of Technology (CZ)
- X-Fab (Germany) (DE)
- Institute of Measurement Science of the Slovak Academy of Sciences (SK)
- Brno University of Technology (CZ)
Publication Details
- Published
- 2025-06-02
- DOI
- https://doi.org/10.23919/measurement66999.2025.11078712
- Primary Topic
- Magnetic and transport properties of perovskites and related materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00