Optical reflectance measurements of Co1−xCrx

Autor:	F. Wooten, C. Y. Fong, C. M. Perlov, Jing Leng
Rok vydání:	1987
Předmět:	symbols.namesake Atmospheric pressure Chemistry Fermi level symbols Analytical chemistry General Physics and Astronomy Fermi energy Electronic structure Photon energy Thin film Molecular electronic transition Spectral line
Zdroj:	Journal of Applied Physics. 61:4275-4277
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.338470
Popis:	The optical reflectance of Co1−xCrx for 0.12≤x≤0.22 has been measured with photon energy between 1.5 and 4.1 eV. Light was unpolarized. For atmospheric pressure, two sets of samples have been used. Spectra were obtained under vacuum (10−3 Torr) with one set of samples. Samples are in the film form with thicknesses of the order of 1 μm. Between 1.5≤ℏω≤3.5 eV, the measured alloy spectra are similar to that for pure Co with E∥c. The reflectance decreases monotonically as the photon energy increases. This suggests that the alloying Cr to Co at x≤0.22 has not changed appreciably the electronic properties of Co within 3.0 eV of the Fermi energy EF. At higher energy the present results show a minimum in reflectance at 4.0 eV. Therefore, the alloying of Cr seems to show its effect in higher‐energy interband transitions.
Databáze:	OpenAIRE
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