# How to calculate temperature dependent phonon band structure in VASP

I want to calculate phonon band structure using VASP for a double perovskite $$\ce{A2BB'X6}$$.

Most of the perovskites are well known for dynamical instability at $$\pu{0K}$$ but show a dynamically stable nature at $$\pu{300K}$$.

How can I calculate phonon band structure using VASP at $$\pu{300K}$$?

Overall, both effects can be important. I am not familiar with the structures you are interested in, but in the oxide perovskties (e.g. BaTiO$$_3$$) which also exhibit temperature driven phase transitions between different structures, phonon-phonon interactions are the dominant mechanism.