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Boron K-edge in Co40%Fe20%B20%

Line plot of B K-edge in Co0.4Fe0.2B0.2 (opens larger version)
B-K in metallic Co0.4Fe0.2B0.2 has an edge onset at 188 eV. The step-function-like shape of the edge reflects its metallic, almost free-electron-like DOS. This edge can be difficult to detect in thick samples due to plural scattering from valence excitations

By: Judy Cha @ Cornell University

Microscope: FEI Tecnai T20

Note: Composition of the material is: Co40%Fe20%B20%