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How long does it take for a novice to built up his own complete set of ReaxFF reactive force field parameters for example for the system containing H, O, Pt, Ti, Ta elements (or maybe there is such system - I didn’t find)?
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Can I construct or use the set of parameters from other sets containing desired elements? In other words, are parameters for one element transferable?
How long does it take for a novice to built up his own complete set of
ReaxFF reactive force field parameters
Given that creating a parameterization of ReaxFF could likely
result in a journal paper, I'd say it takes a while. Would turn
you from a novice into an expert.
As has been said in this forum before, the best way to start
is take a published ReaxFF paper for a system close to yours
and start by reproducing those calculations.
Steve