## Phonon density of states for bcc iron

*D*(ω) [10^{15} s/rad m^{-3}] | |

| ω [10^{12} rad/s] |

The atomic density is taken to be 8.49×10^{28} m^{-3}. Each atom has three degrees of freedom so the integral over all frequencies is 3×8.49×10^{28} m^{-3}. The data is from doi: 10.1007/b19988.

T = 295 K