IBRION=3 bulk optimization: Difference between revisions

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To choose a proper value for the POTIM in case of a IBRION=3 bulk optimization, you first need to perform a frequency calculation, setting in the INCAR file
To choose a proper value for the POTIM in case of a IBRION=3 bulk optimization, you first need to perform a frequency calculation, setting in the INCAR file
        
        
frequencies:
frequencies:
   IBRION =  5    #     
   IBRION =  5    #     
   EDIFF  =  1E-7  #  
   EDIFF  =  1E-7  #  

Revision as of 11:03, 23 October 2018

To choose a proper value for the POTIM in case of a IBRION=3 bulk optimization, you first need to perform a frequency calculation, setting in the INCAR file

frequencies:
 IBRION =   5     #     
 EDIFF  =  1E-7   # 
 POTIM  =   0.010 #                  
 NFREE  =   2     # 

When this calculation converge you need to