the specific heat of cd mn se (x = 0.01) and cd , mn s (x = 0.026) in the temperature range of 0.3 - 40k was measured. the measurements were carried out in different applied magnetic fields (h = 0,10,20, 28kg). the results were analyzed with a model which includes long range interactions. calculations based on on extended version of nearest neighbor pair approximation (including triplets) yield...

The extremely short range of atomic forces limits the effectiveness of adsorptive forces to a region within an atomic diameter of the surface.' Furthermore, the portions of this force region directly overlying the surface atoms would be the seat of forces enormously more intense than the regions in between these atoms. Such a structure of the adsorptive forces leads to the conception that the s...

The efficiency of the ideal stirling cycle assumes, that the cylinder volumes are isothermal and that the temperatures in the cylinder volumes are identical to the temperatures in the heat sink and the heat source. The efficiency is then identical to the efficiency of the Carnot cycle. However, in a real stirling machine the cylinder volumes are nearly adiabatic instead of isothermal, and the h...