I need to construct an atomic model for Fe-Mn-Al-Ni-C alloy using LAMMPS. Can anyone please suggest which inter-atomic potential is suitable for this combination? Even I searched in the NIST repository, but I couldn’t find anything. Otherwise, Can anyone share how to create an inter-atomic potential file for an alloy?
I guess the answer to your question depends on what you are striving to reproduce 
Maybe you can start with doing a bibliographic search on the topic, searching for example for people who have already modelled your system (or something similar) aiming to investigate the same thing you want to investigate.
Hi @Anantham,
LAMMPS is a classical molecular dynamics simulation software. It is designed to integrate the equations of motions (among some more refined things) but it is not capable of constructing an atomic model. There are other software out there for that purpose and you should look into the relevant literature to search what suits your needs. This generally require careful parameters tuning and is a lot of work already. As @ceciliaalvares puts it, look for people that did what you are trying to achieve and study their methodology first. Trying to randomly mix models usually leads to garbage results.
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