<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt"><div>Dear Dr. Stefaan,</div><div>Thanks for your reply.</div><div>Therefore, pressure-induced phases transition=(DeltaE)/(DeltaV) which DeltaE=E2-E1 ( Energy of two phases at optimized Volume) and DeltaV=V2-V1( Volume of two phases at optimized volume)</div><div>Is it correct?</div><div><br> </div><div>usually in paper, they find possible pressure-induced phases transition by using Gibbs data.</div><div>they find difference of Gibbs energy (DeltaG) from two phases and find the pressure which in it DeltaG=0.</div><div>Can you guide me how i can do that?</div><div>I know Gibbs=E + PV at zero-temperature.</div><div>Can you guide me how i can find data (E,P,V) for gibbs calculations in WIEN2k.</div><div>With best,</div><div>Mahdi <br></div></div></body></html>