<div dir="ltr">Dear Prof. Peter and other Wien2k users<div><br></div><div>*The parent structure file for all below calculations was well-optimized one and then I performed two calculations with applied pressure. <br></div><div><br></div><div>I am trying to do pressure calculation of a ternary compound. I applied pressure from 0 to 14GPa in step of 2GPa. Without optimization, I see a clear decrease in the lattice parameters. </div><div>Unoptimised lattice parameters with mentioned pressure (in GPa).</div><div><div>0P 19.246483</div><div>2P 19.094359</div><div>4P 18.959055</div><div>6P 18.836998</div><div>8P 18.726089</div><div>10P 18.624460</div><div>12P 18.530711</div><div>14P 18.443746</div></div><div><br></div><div><br></div><div>But when I optimize the lattice parameters the lattice parameters first decrease up to 4P then increase up to 12P and then decrease for 14P.<br></div><div><br></div><div><table cellspacing="0" border="0"><colgroup span="2" width="85"></colgroup><tbody><tr><td height="17" align="left">0P</td><td align="right">19.248</td></tr><tr><td height="17" align="left">2P</td><td align="right">19.2479</td></tr><tr><td height="17" align="left">4P</td><td align="right">19.245</td></tr><tr><td height="17" align="left">6P</td><td align="right">19.248</td></tr><tr><td height="17" align="left">8P</td><td align="right">19.2489</td></tr><tr><td height="17" align="left">10P</td><td align="right">19.2504</td></tr><tr><td height="17" align="left">12P</td><td align="right">19.251</td></tr><tr><td height="17" align="left">14P</td><td align="right">19.2507</td></tr></tbody></table><br></div><div>So my queries are:</div><div><br></div><div>1. Please comment on this trend in lattice parameters.</div><div><br></div><div>2. In the case of 0P and 6P, the optimized lattice parameters are same which will give the same case.struct file. Obviously, the results for 0P and 6P would be same. I wonder if someone could give input on this situation. The applied pressure should change the properties.</div><div><br></div><div><br></div><div><br></div><div>Regards</div><div><br></div><div>Bhamu</div>
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