Thermodynamic properties of4He. II. The bcc phase and theP-T and V-T phase diagrams below 2 K

@article{Hoffer1976ThermodynamicPO,
  title={Thermodynamic properties of4He. II. The bcc phase and theP-T and V-T phase diagrams below 2 K},
  author={James K. Hoffer and Walter R. Gardner and Charles Garrow Waterfield and Norman E. Phillips},
  journal={Journal of Low Temperature Physics},
  year={1976},
  volume={23},
  pages={63-102}
}
The constant-volume heat capacity of 4He has been measured at molar volumes from 20.45 to 29.71 cm3/mole in the temperature range from 0.3 to 4 K. The entropy has been obtained as a function of volume and temperature by extrapolation of the data to 0 K. The P-T equilibrium curves below 2 K were obtained from the volume dependence of the entropy in the two-phase regions. The V-T curves were obtained above 1.25 K by observation of heat capacity discontinuities at the phase boundaries and below 1… 

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