Bulletin of the American Physical Society
24th Annual Meeting of the APS Northwest Section
Thursday–Saturday, June 20–22, 2024; University of Washington - Bothell, Bothell, Washington
Session N02: Condensed Matter II
1:30 PM–2:18 PM,
Saturday, June 22, 2024
University of Washington, Bothell
Room: Discovery Hall 162
Chair: John Neumeier, Montana State University
Abstract: N02.00001 : Thin film synthesis of rare earth and actinide nitrides using molecular beam epitaxy*
1:30 PM–1:42 PM
Presenter:
Kevin D Vallejo
(Idaho National Laboratory)
Authors:
Kevin D Vallejo
(Idaho National Laboratory)
Brelon J May
(Idaho National Laboratory)
Zachery Cresswell
(Idaho National Laboratory)
Volodymyr Buturlim
(Idaho National Laboratoy)
Sabin Regmi
(Idaho National Laboratory)
Krzysztof Gofryk
(Idaho National Laboratory)
High-quality thin film samples are the ideal stage to study physical properties with high sensibility to defects, impurities, and structural distortions. We will present results on the growth conditions in a molecular beam epitaxy chamber of pure and doped SmN, and its electronic transport properties as a function of temperature and magnetic field. Similarities with CeN and UN thin films are also explored. The presence of SmN(111) peaks on (001) substrates indicates an orientation-preference for some material systems. The electrical resistivity and magnetic susceptibility studies have shown a range of magnetic behaviors, including paramagnetic and ferromagnetic. With a potential superconductive transition around ~10 K, SmN and its doping effects on crystal structure and electronic properties are characterized.
[1] Vallejo, K. D., Kabir, F., Poudel, N., Marianetti, C. A., Hurley, D. H., Simmonds, P. J., ... & Gofryk, K. (2022). Advances in actinide thin films: synthesis, properties, and future directions. Reports on Progress in Physics, 85(12), 123101.
*This work was supported through the INL Laboratory Directed Research & Development Program under U.S. Department of Energy Idaho Operations Office Contract DE-AC07-05ID14517
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