Transition temperatures superconductors Table

Soft metallic elements such as Al, In, Pb, Hg, Sn, Zn, Tl, Ga, Cd, V and Nb are type I superconductors. Alloys and chemical compounds such as Nb3Sn, V3Ga, and lZa3In, and some transition elements, are type II superconductors. Type II substances generally have a higher Tc than do type I superconductors. The recently discovered transition metal oxide superconductors have generated intense interest because they are type II superconductors with very high transition temperatures. Table 13.1 summarizes Tc for selected superconductors. 

TABLE 3 Borocarbide superconductors with LuNi2B2C-type structure and their superconducting transition temperature Tc and magnetic ordering temperature Tn ... 

Table 10,1 Transition temperatures To and critical pressures po of some organic superconductors.

As can be appreciated in the examples illustrated in Table 4.14, a number of superconductors based on the inclusion of alkali metals and thalium have been prepared. Superconducting transition temperatures in these compounds are significantly higher than those observed for the correponding graphite intercalates. Apparently, in the case of the fullerenes there is a near linear relationship between the superconducting transition temperature, Tp, and the alkali metal size. Such a relationship, deduced from the correlation between Tp and the... 

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