Hybrid potential file for high entropy superalloy

LAMMPS
1

Dear all,
there are five elements in my model, Co Cr Fe Ni Al
I have two potential files:

  1. FeNiCrCoAl.eam.alloy 2.Ni-Al-Cr.eam.fs

And I wanna use the first potential file to describe Co-Cr, Co-Fe, Co-Ni, Co-Al, Fe-Cr, Fe-Ni, and Fe-Al interactions.
And the second file to describe Cr-Ni-Al interaction
so I wrote the code:

pair_style hybrid eam/fs eam/alloy
pair_coeff * * eam/fs Ni-Al-Cr.eam.fs NULL Cr NULL Ni Al
pair_coeff 1 2* 5 FeNiCrCoAl.eam.alloy
pair_coeff 2 3 FeNiCrCoAl.eam.alloy
pair_coeff 3 4*5 FeNiCrCoAl.eam.alloy

and there is an error:
ERROR: Pair coeff for hybrid has invalid style: FeNiCrCoAl.eam.alloy (…/pair_hybrid.cpp:500)
Last command: pair_coeff 1 2*5 FeNiCrCoAl.eam.alloy

can anyone give me som advise to solve this?

2

This is completely bogus, independent from your syntax errors.

When you want to use EAM (or MEAM) for an alloy you must not use pair style hybrid. You most certainly cannot choose a pairwise decomposition of how you assemble Interactions from multiple potentials. It is incompatible with how the EAM potential works at a fundamental level.

Sorry