<html><head></head><body bgcolor="#FFFFFF"><div>The best option for you may be the quasi-harmonic approximation.<div>You may want to start from here: <a href="http://arxiv.org/abs/1112.4977v1">http://arxiv.org/abs/1112.4977v1</a></div><div>SB</div><br>--<div>Stefano Baroni, Trieste -- swift message written and sent on the go</div></div><div><br>On 18/feb/2012, at 19:58, zafar rasheed <<a href="mailto:zafartariq2003@yahoo.com">zafartariq2003@yahoo.com</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top" style="font: inherit;">Dear Quantum Espresso Users<br><br>I want to calculate volume at different temperatures. Wolud any body guide me by using which calculation(vc md , vc relax or any other) and parameters I can calculate T-V relation. My goal is to calculate coefficient thermal of linear expansion (Alpha).<br><br>Best regards<br><br>Muhammad Zafar<br>
PhD Scholar<br>
Department of Physics<br>
The Islamia University of Bahawalpur,Pakistan</td></tr></tbody></table></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Pw_forum mailing list</span><br><span><a href="mailto:Pw_forum@pwscf.org">Pw_forum@pwscf.org</a></span><br><span><a href="http://www.democritos.it/mailman/listinfo/pw_forum">http://www.democritos.it/mailman/listinfo/pw_forum</a></span><br></div></blockquote></body></html>