ERROR Incorrect args for pair coefficients (src/MANYBODY/pair_eam.cpp:376)

Hello sir,
I am trying to simulate AL-CNT composite by taking an Al as atom 1 and C as atom 2 and defined force field in my script as written:
pair_style hybrid eam airebo 3.0 lj/cut 4
pair_coeff 1 1 eam Al_jnp.eam Al NULL #Al-Al
pair_coeff 2 2 airebo 3.0 CH.airebo NULL C #C-C
pair_coeff 1 2 lj/cut 0.03438 3.01 #Al-C
but getting an error Incorrect args for pair coefficients (src/MANYBODY/pair_eam.cpp:376)
Last command: pair_coeff 1 1 eam Al_jnp.eam Al NULL #Al-Al

I considered LJ for Al-CNT interaction

eam for Al-Al interaction and AIREBO for C-C interaction
kindly help me regarding the same.

1 Like

LAMMPS is correct to point out the the line in the input it stops on is incorrect. Please see the manual.The following line for AIREBO is also incorrect.

You have to look at both the documentation for the individual pair style and hybrid to put together the correct pair_coeff commands