| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
High Entropy Materials: Concentrated Solid Solution, Intermetallics, Ceramics, Functional Materials and Beyond
|
| Presentation Title |
Magnetic Properties of High Entropy Oxides |
| Author(s) |
Abhishek Sarkar, Ralf Witte, Robert Kruk, Richard Brand, Horst Hahn |
| On-Site Speaker (Planned) |
Abhishek Sarkar |
| Abstract Scope |
High entropy oxides (HEOs) are single-phase solid solutions consisting of 5 or more cations in equiatomic amount. Several compositions along with different crystal structures are already reported for HEOs. Each of these systems exhibits distinct phase stabilization mechanism. In addition to the intriguing structural features, the distinct design concept promotes possibilities for fine tailoring of the functional properties. For instance, HEOs exhibit colossal dielectric constant, high room temperature Li-ion conductivity, highly reversible Li-storage capability, low thermal conductivity, etc.
The focus of this study is the magnetic properties of HEOs, which are driven by the crystal structure and the synergy stemming from the presence of multiple elements. The magnetic ordering in HEOs despite the chemical disorder is appealing. In addition, exchange bias, non-collinearity, magnetocrystalline anisotropy, etc., can also be observed in single-phase HEOs. The vast research space that the HEOs offer, can result in the discovery of unprecedented physical phenomena. |