MICROMETALLURGY : A TECHNIQUE FOR EXAMINING THE STRUCTURE OF BINARY-ELEMENT THIN FILMS OVER A WIDE RANGE OF COMPOSITION
1996
We describe a procedure for producing thin-film TEM specimens containing a thickness and/or composition gradient, utilizing an out-of-contact mask at an appropriate distance from the substrate. Imaging and diffraction capabilities of the TEM are used to examine the local structure of the film; EELS or EDX analysis provides the local elemental composition. The procedure is illustrated by results obtained from two binary-alloy systems: Se–Te (which displays a complete range of solid solubility) and Sn–Ge (where mutual solubility is very low).
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