<div dir="ltr">Then according to it, shouldn't I be using the formula V=abc?<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Oct 26, 2021 at 3:47 PM Pooja Vyas <<a href="mailto:poojavyas595@gmail.com">poojavyas595@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"><div>Dear user,</div><div> my lattice parameters are in agreement with <a href="https://materialsproject.org/materials/mp-560885/" target="_blank">https://materialsproject.org/materials/mp-560885/</a>. For which I've used ibrav=8 which is for primitive.<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Oct 26, 2021 at 3:35 PM Kazume NISHIDATE <<a href="mailto:nisidate@iwate-u.ac.jp" target="_blank">nisidate@iwate-u.ac.jp</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"><br>I don't know what type of primitive vectors you are choosing, but the<br>difference of the volumes may originate from the difference of their<br>definitions.<br><br>The simple orthorhombic Bravais lattice is identical to the<br>conventional cell with the volume of V=abc. While the volume of the<br>primitive face-centered orthorhombic unit cell is V=abc/4.<br>In your system, 45x4 => 180 is close to your value of 176.<br><br>see eg.<br><a href="http://aflowlib.org/prototype-encyclopedia/orthorhombic_lattice.html" target="_blank">http://aflowlib.org/prototype-encyclopedia/orthorhombic_lattice.html</a><div><br clear="all"><div><div dir="ltr"><div dir="ltr"><span style="color:rgb(0,0,0);font-family:monospace;font-size:18px">best regards</span><br style="color:rgb(0,0,0);font-family:monospace;font-size:18px"><span style="color:rgb(0,0,0);font-family:monospace;font-size:18px">kazume NISHIDATE</span><br style="color:rgb(0,0,0);font-family:monospace;font-size:18px"><span style="color:rgb(0,0,0);font-family:monospace;font-size:18px">敬具 西館数芽</span><br style="color:rgb(0,0,0);font-family:monospace;font-size:18px"><br style="color:rgb(0,0,0);font-family:monospace;font-size:18px"><span style="color:rgb(0,0,0);font-family:monospace;font-size:18px"><a href="mailto:nisidate@iwate-u.ac.jp" target="_blank">nisidate@iwate-u.ac.jp</a></span><br style="color:rgb(0,0,0);font-family:monospace;font-size:18px"><span style="color:rgb(0,0,0);font-family:monospace;font-size:18px"><a href="mailto:kazume.nishidate@gmail.com" target="_blank">kazume.nishidate@gmail.com</a></span><br></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">2021年10月26日(火) 17:52 Pooja Vyas <<a href="mailto:poojavyas595@gmail.com" target="_blank">poojavyas595@gmail.com</a>>:<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"><div>Dear users,</div><div><br></div><div>I required optimized lattice parameters of orthorhombic CaSiO3 for which I executed variable cell relaxation. The equilibrium volume obtained was 176 ang^3 while the reported ones are around 45 ang^3. The optimized lattice constant agrees well with reported data. Can I know how to convert lattice parameters a, b, c of orthorhombic CaSiO3 into volume? <br></div><div><br></div><div>Also If I require a lattice constant-energy curve, should I change all lattice constants a, b, and c with equal step size and run an scf at all points?</div><div><br></div><div>Regards.<br></div></div>
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