The variation of Tc for the V-Ru compounds over the composition range 42 to 47.5 at % Ru has been investigated for hydrostatic pressures up to 25kbar. At zero pressure Tc peaks sharply between 45.5 and 46 at % Ru, with a subsidiary peak occurring about 44 at %. Heat treatment significantly influences the value of Tc For the cubic, B2 structure compounds with less than 45 at % RuTc follows a slight linear decrease under pressure. At Ru concentrations greater than 45.5 at %, for which the crystal structure undergoes a tetragonal distortion at zero pressure, there is a dramatic change in the pressure dependence of Tc which becomes strongly positive. This behaviour is discussed in relation to the pressure induced stability of the cubic structure.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
- Metals and Alloys