Document Type

Article

Publication Date

12-1979

Journal or Book Title

Physical Review B

Volume

20

Issue

12

First Page

4864

Last Page

4871

DOI

10.1103/PhysRevB.20.4864

Abstract

Thermoreflectance measurements on NbxMo1−x alloys (x=0.2, 0.5, 0.8) have been carried out in the 0.5-5.0 eV energy region. Augmented-plane-wave (APW) calculations for Nb at two different lattice parameters and for Mo, as well as coherent-potential-approximation calculations (CPA), have been carried out and have been used in the interpretation of the experimental results. Several optical transitions [Σ1(EF)→Σ3, G4(EF)→G1,N2→N′1], have been identified, and their concentration dependence followed. These results contribute significantly toward putting the interpretation of the optical properties of Nb, Mo, and their alloys on a much more secure footing. In particular, it has been confirmed that while the lower conduction bands behave roughly as predicted by the rigid-band model, the higher-lying conduction bands show distinctly non-rigid-band-like behavior.

Comments

This article is from Physical Review B 20 (1979): 4864, doi:10.1103/PhysRevB.20.4864. Posted with permission.

Copyright Owner

The American Physical Society

Language

en

File Format

application/pdf

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