| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Functional and Structural Thin Films and Coatings
|
| Presentation Title |
Molecular Beam Epitaxy of Binary and Ternary Manganese and Chromium Nitrides |
| Author(s) |
Kevin Vallejo, Krzysztof Gofryk, Sandra Julieta Gutiérrez-Ojeda, Maria F Muñoz, Tehseen Adel, Gregorio H Cocoletzi4, Angela R Hight Walker, Brelon May |
| On-Site Speaker (Planned) |
Brelon May |
| Abstract Scope |
Transition metal nitrides are employed in a wide variety of electrochemical, structural, photochemical, and plasmonic applications. Among these compounds Mn- and Cr- nitrides have shown exceptional potential for magnetic sensing and spintronics. These systems are complex with several different metastable phases predicted and experimentally realized. This study uses molecular beam epitaxy to synthesize epitaxial thin films of different Mn-N and Cr-N phases and investigates the electrical and magnetic properties. Both rocksalt MnN and CrN display metallic behavior, with the latter showing a structural-magnetic transition at ~280K. However, combining these elements at similar growth conditions, results in the emergence of a new phase. These alloys retain 4-fold symmetry, but the lattice constants deviate from Vegard’s law. The ternary compounds show remarkably different temperature dependent resistivity relative to the binary constituents; some compositions are narrow-gap semiconductors. This work presents an avenue for the epitaxial integration of metallic, magnetic, and semiconductor materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Electronic Materials, |