About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
High-Entropy Materials: Solid Solutions, Intermetallics, Ceramics, Functional Materials and Beyond VI
|
| Presentation Title |
Local Disorder Effects on Structure–Property Correlations in Configurationally Enriched Yttrium Iron Garnets |
| Author(s) |
Rubayet Tanveer, Dylan Windsor, Cale Overstreet, Tatenda Kanyowa, Bin Hu, Maik K. Lang, Haixuan Xu, Veerle Keppens, William J. Weber |
| On-Site Speaker (Planned) |
Rubayet Tanveer |
| Abstract Scope |
Yttrium Iron Garnet (YIG) stands out for its strong room temperature magnetic moment, minimal magnetic damping, and pronounced frequency responsiveness. Introducing compositional complexity – through enhanced configurational entropy – at targeted lattice sites offers a powerful strategy to tune these properties, integrate novel cations, and promote structural disorder, potentially revealing new functionalities. However, accurately predicting the local structural motifs in these compositionally intricate oxides remains a formidable challenge, as heightened configurational entropy significantly increases the propensity for local disorder and lattice distortions, thereby obscuring clear correlations between structure and properties. In this work, Fe sites in YIG are systematically substituted with five different transition metals to manipulate magnetic and optical behavior and induce a spin glass state through magnetic ion disorder. Local structural intricacies are explored through relaxed SQS models and synchrotron X-ray PDF analysis, with emphasis on how disorder influences the magnetic behavior and optical emission characteristics. |