Solid zirconium nitride, ZrN cr

The heat capacity of ZrN(cr) was measured by Todd [50TOD] from 53.1 to 

7 K whereas Coughlin and King [50COU/KIN] measured the enthalpy change from 

0 to 1672 K. The two sets of data join relatively smoothly. The data, in the temperature range 50 to 567 K, has been re-interpreted in this review to give thermodynamic values that are the most consistent with the measured data in this temperature range. The dependence of the heat capacity on temperature, as determined by least squares analysis, is given by  

For the entropy below 50 K, Todd [50TOD] employed the empirical Debye and Einstein functions below 50 K to extrapolate a value for the entropy (1.73 J-K -mor ). 

The selected heat capacity at 298.15 K determined from the least squares regression is  

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