About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Ceramic Materials and Processing
|
| Presentation Title |
Large charge-to-spin conversion in high entropy perovskite oxides |
| Author(s) |
John Heron |
| On-Site Speaker (Planned) |
John Heron |
| Abstract Scope |
The spin Hall effect (SHE) is a material property in which a charge current produces a transverse spin-polarized current. Here, we will discuss the SHE and its associated figures of merit in conductive high-entropy oxides (HEOs). We will discuss the interplay of disorder and composition on the effect in Sr0.95((TiCrNbMo)(1-x)/4Wx)O3. Second harmonic Hall and spin-torque ferromagnetic resonance were performed to probe the SHE. These methods indicate a large conversion efficiency of 60.8 and 66.1% for the equimolar (x=0.2) HEO thin-film, particularly compared to a non-disordered SrNbO3 film (11%). We find that local distortions from cubic symmetry (despite having global cubic symmetry) in the presence of large spin-orbit coupling due to the W bands at the Fermi level lead to the boosted effect. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electronic Materials, Thin Films and Interfaces, High-Entropy Alloys |