Article ID Journal Published Year Pages File Type
10670498 Thin Solid Films 2011 5 Pages PDF
Abstract
Optical switching processes of Mg-Ni based switchable mirrors were studied “in situ” using spectroscopic ellipsometry. Ellipsometric angles Ψ and Δ of the switchable mirrors varied drastically as a result of hydrogenation and dehydrogenation. These variations are due to transformation between metal and semiconductor of Mg-Ni layers. We have clarified the switching processes by analyzing these variations using the following two steps. First, we evaluated dielectric functions of five materials: metal, hydrogen-solid-solution, hydride states of Mg-Ni alloy, and metal and hydride states of Pd. Using these dielectric functions, we then varied thickness and concentration of each layer.
Related Topics
Physical Sciences and Engineering Materials Science Nanotechnology
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