Document Type

Article

Publication Date

12-1996

Journal or Book Title

Physical Review B

Volume

54

Issue

24

First Page

17385

Last Page

17391

DOI

10.1103/PhysRevB.54.17385

Abstract

The dielectric functions of equiatomic XTi (X=Fe,Co,andNi) alloys in the B2 phase (cubic CsCl structure) were measured by spectroscopic ellipsometry in the energy range of 1.5-5.4 eV. The optical conductivity spectra show close resemblance to each other with a peak at 1.9-2.3 eV and another at 3.1-3.4 eV. Fine structures observed in previously reported measurements were not seen. The band structures and the optical conductivity spectra were calculated in the B2 phase using the linearized-augmented-plane-wave method with the local density approximation. The agreement between the measured and calculated spectra is markedly improved by the inclusion of a quasiparticle self-energy correction. Strong optical transitions are identified and the similarities and differences among the optical conductivity spectra of the three compounds are explained.

Comments

This article is from Physical Review B 54 (1996): 17385, doi:10.1103/PhysRevB.54.17385. Posted with permission.

Copyright Owner

The American Physical Society

Language

en

File Format

application/pdf

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