Article
Optical properties and electronic structure of β′−NiAl
Physical Review B
Document Type
Article
Disciplines
Publication Date
6-1-1980
DOI
10.1103/PhysRevB.21.5505
Abstract
The optical constants and their temperature derivatives have been determined for β′−NiAl from absorption and thermoreflectance measurements in the energy range of 0.2-4.4 eV. The results are interpreted using the self-consistent energy bands of Moruzzi, Williams, and Gelatt. By comparing a calculated joint density of states with ε2, the imaginary part of the dielectric function, good overall agreement is found between theory and experiment. In contrast to earlier analyses, it is found that the 2.5-eV peak in ε2 is primarily due to direct interband transitions terminating near the Fermi surface. This new interpretation of the 2.5-eV feature is discussed in relation to previously reported concentration effects and the rigid-band model.
Copyright Owner
The American Physical Society
Copyright Date
1980
Language
en
File Format
application/pdf
Citation Information
D. J. Peterman, R. Rosei, David W. Lynch and V. L. Moruzzi. "Optical properties and electronic structure of β′−NiAl" Physical Review B Vol. 21 Iss. 12 (1980) p. 5505 - 5510 Available at: http://works.bepress.com/david_lynch1/62/
This article is from Physical Review B 21 (1980): 5505, doi:10.1103/PhysRevB.21.5505. Posted with permission.