Phase diagrams of the 3rd group metals

According to this principle, the diagram of Fig. 5.10 may be considered a summary of the entire combination of trivalent intra-lanthanide diagrams. In order, indeed, to estimate the position of a special point (a critical composition, a phase boundary, etc.) in any intra-lanthanide alloy system (between the lanthanides Ln and Ln ) the following rule has been proposed  

Notice that for simplicity, in Fig 5.10 the phase boundaries are shown as narrow lines however, according to Gschneidner and Calderwood (1986), in the actual 

The applications and the limits (for instance in the case of cerium and in some cases regarding the formation of the 6 phase) of these concepts have been discussed by Gschneidner and Calderwood (1986) and high-pressure generalized phase diagrams have also been presented. 

2 An-An alloys. A summary ofthe phase diagrams for adjacent actinide metals is shown in the connected binary phase diagrams of Fig. 5.11. The structure of this diagram resembles that reported in Fig. 5.10 for the lanthanides notice, however, that such a sequence of interconnected diagrams could be used as a generalized diagram in a more limited way only, possibly for the heavier actinides from americium onward. 

In comparison with the lanthanides, the actinides show a more complex dependence of several properties on the atomic number an analysis, for instance, of the 

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