Tc Studies of Nb—Ga Binary and Ternary Compounds

  • D. W. Deis
  • J. K. Hulm


T c studies in the binary Nb—Ga system1,2 as a function of preparative methods and heat treatments have helped to clarify the conditions under which the maximum \({{T}_{c}}\simeq {{20}^{\circ }}K\) can be obtained in this system. The addition of small amounts of a third element in binary A15 compounds has always been of interest from both the point of view of T c enhancement and to control grain growth and thus enhance J c . If increased J c is the goal, it is always desirable to not depress T c simultaneously. Using techniques previously proven to be appropriate, we have continued our studies of Nb1-xGax and have also investigated Nb0.70-y M y Ga0.30 materials where M is Mo, Ta, Ti, or Zr.


Onset Temperature Midpoint Temperature Titanium Zirconium High Onset Temperature Transition Metal Substitution 
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Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • D. W. Deis
    • 1
  • J. K. Hulm
    • 1
  1. 1.Westinghouse Research LaboratoriesPittsburghUSA

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