Force field of chromate in MD

hello all, I am going to use the traditional MD method to carry out the molecular dynamics simulation of chromate(CrO4), but I have not found the appropriate force field file. Most of the simulation of chromate is based on the DFT method. Does anyone know the force field suitable for chromate? Thanks a lot!

Please ask yourself: is this forum category called “the MD potential exchange”?

Either you need to improve your literature searching skills or there are no suitable potentials of the kind you are looking for that have been published. Then you would have to learn how to parameterize such potentials.

At any rate, this is at best only peripherally related to LAMMPS and not within the designated topics, and the chance that by accident somebody that is willing to give answers here has done simulations with such a potential is astronomically small.