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Q: Permissible amount of forces on ions in a relaxed structure

Hitanshu SachaniaAn equilibrium structure would be at a local minimum but that doesn't happen with all relaxation calculations. Relaxed structures tend to have some resultant forces on ions. What amount of these forces can be accepted? Is 0.05 eV/$\unicode{xC5}$ acceptable?

density-functional-theory ab-initio-calculations geometry-optimization potential-energy-surface
 

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