- Access by Xinjiang University
Optical Absorption of Copper and Copper-Rich Copper Nickel Alloys at Room Temperature
Phys. Rev. 162, 628 – Published 15 October, 1967
DOI: https://doi.org/10.1103/PhysRev.162.628
Abstract
The optical absorption of Cu and Cu-Ni alloys was measured on solid samples at room temperature. Light in the visible and ultraviolet region was used. It was found that the wavelength position of the main absorption edge did not change with alloying. It disappeared, however, for alloys with 20 and 25 at.% Ni. The position of the secondary absorption peak moved slightly to lower wavelengths with increasing nickel concentration. The measurements indicate that the optical properties of Cu-Ni alloys cannot be described with a rigid-band model. It is more likely that the addition of nickel to copper creates "virtual energy states," instead of shifting the Fermi energy.
References (14)
- N. F. Mott and H. Jones, The Theory of the Properties of Metals and Alloys (Dover Publications, Inc. New York, 1958), p. 118
- H. Ehrenreich and H. R. Philipp, Phys. Rev. 128, 1622 (1962)
- H. Ehrenreich, in Optical Properties and Electronic Structure of Metals and Alloys, edited by F. Abeles (North-Holland Publishing Company, Amsterdam, 1966), pp. 109-133
- B. Segall, Phys. Rev. 125, 109 (1962)
- M. A. Biondi and J. A. Rayne, Phys. Rev. 115, 1522 (1959)
- N. F. Mott, Proc. Phys. Soc. (London) 47, 571 (1935)
- N. F. Mott, Phil. Mag. 22, 287 (1936)
- P. de Faget de Casteljau and J. Friedel, J. Phys. Radium 17, 27 (1956)
- J. Friedel, Can. J. Phys. 34, 1190 (1956) J. Phys. Radium 19, 573 (1958)
- P. W. Anderson, Phys. Rev. 124, 41 (1961)
- H. Lowery, J. Bor, and H. Wilkinson, Phil. Mag. 20, 390 (1935)
- J. Bor, A. Hobson, and C. Wood, Proc. Phys. Soc. (London) 51, 942 (1939)
- J. Friedel, Proc. Phys. Soc. (London) B65, 769 (1962)
- W. H. Keesom and B. Kurrelmeyer, Physica 7, 1003 (1940) G. L. Guthrie, S. A. Friedberg, and J. E. Goldman, Phys. Rev. 113, 45 (1959)