Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session M13: Materials Synthesis and Processing
8:00 AM–11:00 AM,
Wednesday, March 6, 2024
Room: M100D
Sponsoring
Unit:
FIAP
Chair: Chiou Yang Tan, University of Minnesota
Abstract: M13.00003 : Growth of high quality epitaxial Nb films via Sputter Beam Epitaxy*
8:24 AM–8:36 AM
Presenter:
Riley J Nold
(University of Alabama)
Authors:
Riley J Nold
(University of Alabama)
Ridwan Nahar
(The University of Alabama)
Qiang Huang
(The University of Alabama)
Zhefan Ma
(The University of Alabama)
Adam Hauser
(University of Alabama)
Thin films of Nb were grown on hexagonal Al2O3(11-20) substrates via an off-axis sputter beam epitaxy technique. X-ray diffractometry and reflectivity measurements demonstrated the samples to be single-crystal with low surface roughness. Rocking curve analysis indicated highly epitaxial films, with an omega-scan full width at half maximum of as little as 0.034°. Scanning electron microscopy (SEM) imaging revealed excellent surface conditions absent of defects and with minimal roughness. Variations in the Nb out-of-plane lattice constant were investigated as function of deposition rate and chamber temperature. Magnetic measurements of the Nb films will also be presented.
*The author gratefully acknowledges financial support from the National Science Foundation (NSF CAREER DMR-2047251).
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