<div dir="ltr">Please, check this text: <a href="http://onlinelibrary.wiley.com/book/10.1002/9780470447710">http://onlinelibrary.wiley.com/book/10.1002/9780470447710</a><br>Chapter 7 "Equilibrium Phase Diagrams from Ab Initio Thermodynamics (pages 163–177)" can be a good starting point.<div>
<br></div><div>Oleg<br><br><br>On Fri, Feb 21, 2014 at 7:51 AM, MAHDI SALMANI HIRMAND <<a href="mailto:mahdisa_right@yahoo.com">mahdisa_right@yahoo.com</a>> wrote:<br>><br>> Dear Wien2k users,<br>> How can i find structure phases stability of a compound in two symmetries?<br>
> How can i find the pressure related to it?<br>> Is it necessary to use Gibbs energy for finding the pressure which symmetry of compound will change?<br>> Please give me some advices.<br>> With best,<br>> mahdi<br>
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