<html><body><div style="color:#000; background-color:#fff; font-family:tahoma, new york, times, serif;font-size:18pt"><div>Dear all, <br></div><span id="result_box" class="" lang="en"><span class="hps">I try to</span> <span class="hps">optimize the</span> <span class="hps">lattice parameter of</span> <span class="hps">different</span> <span class="hps">compounds</span>, i fit <span class="hps">with</span><span class="hps"></span> <span class="hps">ev.x</span><span class="">, the problem</span> <span class="hps">is that only</span> <span class="hps">in</span> <span class="hps">the case of compound</span> <span class="hps">MgO,</span> <span class="hps">it</span> <span class="hps">gives me no</span> <span class="hps">result???!!!!!!!!</span></span><div style="color: rgb(0, 0, 0); font-size: 24px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;">############################################<br></div><div
 style="color: rgb(0, 0, 0); font-size: 24px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;">[***@*** MgO_cc]$ ../../../bin/ev.x <br>     Lattice parameter or Volume are in (au, Ang) > <br>     Enter type of bravais lattice (fcc, bcc, sc, hex) > bcc<br>     Enter type of equation of state :<br>     1=birch1, 2=birch2, 3=keane, 4=murnaghan > 4<br>     Input file > mgo.etot_vs_alat</div><div style="color: rgb(0, 0, 0); font-size: 24px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 24px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;"><br></div><div style="color: rgb(0, 0, 0); font-size: 24px; font-family: tahoma,new york,times,serif; background-color:
 transparent; font-style: normal;">#############################################<br>There is any idea??</div><div style="color: rgb(0, 0, 0); font-size: 24px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;">any suggestion will be appreciated.</div><div style="color: rgb(0, 0, 0); font-size: 24px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;">Thanks</div><pre>--------------------------------<br><span style="color: rgb(91, 91, 91); font-family: garamond,new york,times,serif;">Sakhraoui Taoufik</span><br style="color: rgb(91, 91, 91); font-family: garamond,new york,times,serif;"><span style="color: rgb(91, 91, 91); font-family: garamond,new york,times,serif;">Ph.D student </span><br style="color: rgb(91, 91, 91); font-family: garamond,new york,times,serif;"><span style="color: rgb(91, 91, 91); font-family: garamond,new york,times,serif;">Faculty of Sciences of
 Monastir</span><br style="color: rgb(91, 91, 91); font-family: garamond,new york,times,serif;"><span style="color: rgb(91, 91, 91); font-family: garamond,new york,times,serif;">Department of Physics</span><br style="color: rgb(91, 91, 91); font-family: garamond,new york,times,serif;"><span style="font-style: italic; color: rgb(91, 91, 91); font-family: garamond,new york,times,serif; font-weight: bold;">L.M.C.N</span><br style="color: rgb(91, 91, 91); font-family: garamond,new york,times,serif;"><span style="color: rgb(91, 91, 91); font-family: garamond,new york,times,serif;">Monastir, Tunisia</span><br>--------------------------------</pre><div style="color: rgb(0, 0, 0); font-size: 24px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;"><br><br></div><div style="color: rgb(0, 0, 0); font-size: 24px; font-family: tahoma,new york,times,serif; background-color: transparent; font-style: normal;"><br></div><div
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