Abstract
For some time now at Birmingham we have been engaged in an extensive study of the thermodynamic and transport properties of niobium in the mixed state. Although our underlying aim has been to obtain information from these measurements about the properties of the elementary excitations in the mixed state, we recognised at an early stage the importance of taking full account of the anisotropic magnetic properties of niobium in any interpretation of our measurements /1/. Here we illustrate this by reference to our measurements of magnetization, heat capacity, thermal conductivity and ultrasonic attenuation, all of which are strongly influenced by anisotropy in the values of Hc2, K2 and B0 (the field marking the transition between the intermediate mixed state and the fully developed Abrikosov phase).
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