About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
2026 Technical Division Student Poster Contest
|
| Presentation Title |
SPU-10: Ion Channeling Studies of ScAlN: Solute Incorporation and Polytype Transformations |
| Author(s) |
Matteo Carcassi, Joshua Cooper, Thai-Son Nguyen, Joseph Casamento, Huili G. Xing, Debdeep Jena, Rachel S Goldman |
| On-Site Speaker (Planned) |
Matteo Carcassi |
| Abstract Scope |
Recently, the incorporation of scandium (Sc) into wide bandgap semiconductors has generated significant interest due to the possibility of transforming pyroelectric materials into piezoelectrics and ferroelectrics compatible with III-N semiconductors and silicon CMOS. Indeed, the incorporation of Sc into AlN and GaN facilitates a piezoelectric response if the wurtzite (WZ) polytype is maintained. ScN typically crystallizes in the rocksalt (RS) polytype although metastable WZ polytypes have been reported. It has been suggested that the WZ to RS polytype transition depends on growth kinetics, with conflicting reports regarding lattice matching and device performance. To date, the influence of Sc incorporation on host atom displacement and polytype transformation in epitaxial films remains unexplored. Here, we present ion channeling studies of Al(1−x)ScxN alloys grown on AlN/Al2O3 template substrates, quantifying the influence of Sc incorporation and on the displacement of Al and N in the host AlN. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Electronic Materials, Thin Films and Interfaces, Energy Conversion and Storage |