An Overview of the Superconducting Binary Alloy Systems

In Table 3, some data for a family of the most promising A-15 type materials are presented with their critical magnetic fields, and the derivative of critical field with respect to transition temperature (all about 2.5 in value). These data were reported by Hulm and 

Matthias (4) for the series of practical materials with technological importance at the time. 

5 Ventures into Ceramic Materials— Binary Borides, Carbides, 

The quest for higher transition temperatures in superconductors took a strange turn when ceramic materials, possessing good, room-temperature metallic conductivity, were investigated. A study of simple binary compounds such as ZrN (Tc = 10.7 K), NbC (Tc = 

MoC (Tc = 14.3 K), NbN (Tc = 16.0 K), LaC13 16 (Tc = 11.1 K), and the mixed phases NbC0 35N066 (Tc = 17.8 K), and Y0 7Th0 3 C1B5 (Tc =17.0 K), generated much interest. Some selected binary carbides, nitrides, and borides are presented in Table 4 with their superconducting transition temperatures. 

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