<div dir="ltr">Hi Poonam,<div> <br></div><div>From your discussion, it looks like you did 'relax' calculation, so your lattice vectors are not changed. I think you should do 'vc-relax' to minimize stress/pressure so that you will get relaxed lattice vectors and atomic position. In addition to this, it also matters sometimes in the convergence with what value of the 'starting_magnetization' you start. If you know this value from vasp calculation, you can start with that for the specific atoms.</div><div><br></div><div>I hope this helps.</div><div><br></div><div>Best,</div><div>Hari Paudyal</div><div>Binghamton university, SUNY</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jun 24, 2020 at 1:15 PM Poonam Kaushik <<a href="mailto:poonamkaushik40@gmail.com">poonamkaushik40@gmail.com</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"><div dir="ltr">Dear QE users,<div>I want to discuss with you something. I want to do band structure and dos calculations for one material. I have a VASP input file for the same. I converted that file into the QE input file. While performing the spin-polarized calculation I am not able to achieve the convergence, "convergence not achieved after 100 iterations", this type of msg I got in relax as well as SCF.out file. I read most of the previous post, I changed ecut, k points, diagonalization, mixing beta but nothing works out.</div><div><br></div><div>Finally, I started with spin1 unpolarised calculation, After applying the relax calculations in this case, I obtained the new atomic positions and I did the spin polarised calculations on the newly obtained atomic positions. <span style="letter-spacing:0px">I found calculations are conversing but I am not sure:</span></div><div>1. Is this way of proceeding further is correct?</div><div>2. When I calculated the force on this atomic positions for spin polarised calculations</div><div><br></div><div>Total force = 0.418148 Total SCF correction = 0.000066<br></div><div>Computing stress (Cartesian axis) and pressure<br> total stress (Ry/bohr**3) (kbar) P= 104.71<br> 0.00059848 0.00000000 0.00000000 88.04 0.00 0.00<br> 0.00000000 0.00059848 0.00000000 0.00 88.04 0.00<br> 0.00000000 -0.00000000 0.00093838 0.00 -0.00 138.04<br></div><div>I relaxed this system again in a spin-polarized case, but if I am proceeding further with the relax position that I obtained</div><div> here, I am not able to achieve convergence!!</div><div>I don't have so much exposer to everything, Please suggest something.</div><div>Warm regards,</div><div>Poonam S</div><div><div><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">-------------------------------------------------------------------------------------------------<br></div><div dir="ltr">Poonam Sharma<div>Research Scholar </div><div>Department of Physics</div><div>Indian Institute of <span>Technology Bombay</span></div><div><div>Mumbai - 400076<br></div>India.<br></div><div><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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