<div dir="ltr"><div>Thanks Dr. Marks and Dr. Blaha for the reply.</div><div></div><div>Yes , force converged and structure relaxation (mini program) for neutral supercell. <br></div><div>EFG is converged upto required accuracy (EFG data for Ta is attached) for charged supercell. <br></div><div></div><div>###Ta substitution for Ti in STO is a n-type semiconductor. Think it through.###</div><div>Yes sir. But i do not dope Ta directly. It's by way of nuclear transmutation, Ta forms at site of Ti. Hafnium-181 (radioactive and a TDPAC probe) is doped in STO. Hf-181 (stable OS: +4) decays into Ta-181 (stable OS: +5). <br></div><div><br></div><div></div><div>I will try to repeat calculation with 6.5.</div><div><br></div><div>Just one more thing, very recently i noticed that space group is not mentioned in case.struct file after structure relaxation (case.struct file already attached in previous mail). Do " x sgroup" need to run after structrue relaxation also. Before structure relaxation, space group was : 123 P4/mmm as determined by sgroup programme. <br></div><div><br></div><div>Thanking you,</div><div>A. kumar<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jun 8, 2020 at 12:20 PM Peter Blaha <<a href="mailto:pblaha@theochem.tuwien.ac.at">pblaha@theochem.tuwien.ac.at</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">You always complain that the calculations are not converging, but <br>
actually, it is not that bad. You have 4 zeros in :dis<br>
<br>
Are the forces converging ?<br>
<br>
More important: Have you relaxed the structure ? Is the EFG converging <br>
to an accuracy you need.<br>
<br>
As Laurence mentioned before: rkmax=4 is nonsense, 5.5 is a rather crude <br>
minimal value.<br>
<br>
<br>
On 6/6/20 11:50 PM, Ashwani Kumar wrote:<br>
> hi.<br>
> SCF for charged supercell (added 1 electron in case.in2 & 1.0 in<br>
> case.inm) is not converging for rkmax 5.5. :ENE and :DIS shows energy<br>
> convergence but non convergence of charge distance. For rkmax 4.0 ,<br>
> both :ENE and :DIS converged. :ENE and :DIS outputs are attached for<br>
> your reference. please see 'super.scf" as the latest SCF in the file.<br>
> what could be the reason for non convergence of :DIS parameter and how<br>
> can i make it to converge.<br>
> <br>
> -A. kumar<br>
> <br>
> <br>
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