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Phase stability, nitrogen vacancies, growth mode, and surface structure of ScN(0 0 1) under Sc-rich conditions by Hamad A.H. AL-Brithen; Eugen M. Trifan; David C. Ingram; Arthur R. Smith; Daniel Gall is a Engineering article available to read on EtoBox.
What is Phase stability, nitrogen vacancies, growth mode, and surface structure of ScN(0 0 1) under Sc-rich conditions about?
Rocksalt structure scandium nitride films have been grown on magnesium oxide (0 0 1) substrates by molecular beam epitaxy using a radio frequency plasma source for nitrogen. The case of Sc-rich growth conditions, which occurs when the scandium flux J Sc exceeds the nitrogen flux J N ; is discussed. Despite the excess Sc during growth, reflection highenergy electron diffraction and X-ray diffraction (XRD) show that these films have only a single orientation which is (0 0 1), and ion channeling confirms the good crystallinity. Rutherford backscattering shows that these films are offstoichiometric, and this is found to be directly related to variations in the nitrogen, not the scandium, content by secondary ion mass spectrometry. High-resolution XRD reciprocal lattice mapping shows that these variations in the nitrogen content are related to the existence of the N-vacancies. It is concluded that Sc-rich growth leads to the incorporation of N-vacancies into the crystal structure, the concentration of which depends on the Sc/N flux ratio. Additionally, excess scandium conditions at the surface are explored by in situ scanning tunneling microscopy. The observed wider terrace widths as co
Who reads Phase stability, nitrogen vacancies, growth mode, and surface structure of ScN(0 0 1) under Sc-rich conditions?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Hamad A.H. AL-Brithen; Eugen M. Trifan; David C. Ingram; Arthur R. Smith; Daniel Gall
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-0248)
- Published
- 2002
- Language
- EN
- Field
- Engineering (Physical Sciences)