<html><body><div style="color:#000; background-color:#fff; font-family:Courier New, courier, monaco, monospace, sans-serif;font-size:12pt"><pre>Dear all,<br><br><span id="yiv158074858result_box" class="yiv158074858" lang="en"><span class="yiv158074858hps">i want to</span> <span class="yiv158074858hps">fix the</span> <span class="yiv158074858hps">volume</span> <span class="yiv158074858hps">and each</span> <span class="yiv158074858hps">time</span> <span class="yiv158074858hps">calculate the</span> <span class="yiv158074858hps">total energy</span> <span class="yiv158074858hps">to</span> </span><span id="yiv158074858result_box" class="yiv158074858" lang="en"><span class="yiv158074858hps">optimize</span></span> <span id="yiv158074858result_box" class="yiv158074858" lang="en"><span class="yiv158074858hps">the lattice parameter</span>, there is any idea how to proceed.<br></span><span id="yiv158074858result_box" class="yiv158074858short_text" lang="en"><span
class="yiv158074858hps">each</span> <span class="yiv158074858hps">suggestion</span> <span class="yiv158074858hps">will be appreciated</span></span><span id="yiv158074858result_box" class="yiv158074858" lang="en"></span>.<br>--------------------------------<br>Sakhraoui<br> Taoufik<br>Ph.D student <br>Faculty of Sciences of Monastir<br>Department of Physics<br>L.M.C.N<br>Monastir, Tunisia<br>--------------------------------</pre></div></body></html>