Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
63 (1988), S. 4632-4636
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Reversible color-change behavior and its relation to phase transformations in sputter-deposited Ag-50 at. % Zn alloy films were investigated by spectral reflectivity measurements, x-ray diffractometry, and transmission electron microscopy. The color of the alloy film is pink at room temperature when produced by quenching above 560 K, and is silver by quenching between 425 and 545 K. By alternately repeating these heat treatments, the two colored states can be reversibly produced. This color change is observed as reflectivity changes at wavelengths below 600 nm and in the near-infrared range for spectral reflectivity. The pink-colored film has a CsCl-type ordered structure (β' phase), while the silver colored has a hexagonal one (ζ phase). Therefore, the reversible color change is due to the solid-state phase transformations between the β' and ζ phases. By irradiation with semiconductor laser beam, the color change can be induced in a microarea (about 1 μm) of the film.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.341143
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