PHOTOEMISSION AND OPTICAL STUDIES OF COBALT, PALLADIUM, PLATINUM, AND GADOLINIUM.
Abstract
Photoemission and optical reflectivity measurements on cobalt, palladium, platinum, and gadolinium have been made to determine the major features of their electronic structures. Nondirect transitions predominate the optical transitions in all of these materials; however, direct transitions (or nondirect transitions with varying matrix element) are also observed in palladium and platinum. The optical density of states of cobalt is found to be very similar to that of nickel and iron, despite the fact that all three metals have different crystal structures. They all have a strong peak at about 5 eV below the fermi level. No such peak is present in the optical densities of states of palladium and platinum at this energy, though the latter has a strong peak at about 7 eV below the fermi level. The optical density of states of palladium and platinum all have strong peaks right below the fermi level, in reasonable agreement with the findings based on specific heat and magnetic susceptibility data. The noble metals, copper, silver, and gold, also have strong peaks near the top of the d states. The optical density of states of gadolinium is found to be in reasonable agreement with the calculated density of states for -4 eV = or < E - E sub f = or < 0.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1967
- Accession Number
- AD0667544
Entities
People
- Albert Yeou-cherng Yu
Organizations
- Stanford University