Auger parameters aluminum

Figure 5 shows such an Auger parameter plot for a series of aluminum compounds. Due to crowding, several values given in Table I are omitted from this plot. Most of the compounds are grouped to the lower left, whereas aluminum metal is at the upper right. Intermediate between these are sodium zeolite and zinc aluminate (ZnAl204). 

Table II shows representative Auger parameters for several silicon and aluminum species. Both mineral and non-mineral species are shown to give some idea of the range of values. For these calculations, the fused silicon and aluminum 2P3/2 1/2 photoelectron lines are used in conjunction with the KLL Auger lines.

The chemical state of aluminum on the surface has a multitude of possible configuration designations. The state in the hydroxylated outer layer corresponds to various mineral phases such as AIO(OH) (boehmite), Al(OH)3, having a modified Auger parameter of 1460.6 on the acetone-cleaned surface and 1461.4 on both the (Aik) and (Dox) surfaces. When capped with a plasma polymer, depth profiles show that the state of the aluminum is seen to be consistent with the many oxides, as well as mixed states with plasma film components. 

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