Optical properties and electronic structure of the Cu-Zn brasses

Title: Optical properties and electronic structure of the Cu-Zn brasses
Creator: Keast, V. J.; Ewald, J.; De Silva, K. S. B.; Cortie, M. B.; Monnier, B.; Cuskelly, D.; Kisi, EH
Relation: ARC.DP120102545 http://purl.org/au-research/grants/arc/DP120102545
Relation: Journal of Alloys and Compounds Vol. 647, p. 129-135
Publisher Link: http://dx.doi.org/10.1016/j.jallcom.2015.06.136
Publisher: Elsevier
Resource Type: journal article
Date: 2015
Description: The color of Cu-Zn brasses range from the red of copper through bright yellow to grey-silver as the Zn content increases. Here we examine the mechanism by which these color changes occur. The optical properties of this set of alloys has been calculated using density functional theory (DFT) and compared to experimental spectroscopy measurements. The optical response of the low Zn content α-brasses is shown to have a distinctly different origin to that in the higher content β', γ and ε-brasses. The response of β'-brass is unique in that it is strongly influenced by an overdamped plasmon excitation and this alloy will also have a strong surface plasmon response.
Subject: metals and alloys; dielectric response; density functional theory; optical spectroscopy
Identifier: http://hdl.handle.net/1959.13/1332219
Identifier: uon:26812
Identifier: ISSN:0925-8388
Language: eng
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