QuantumATK Forum

QuantumATK => General Questions and Answers => Topic started by: Steven on September 20, 2017, 08:58

Title: Phase Transition Pressure
Post by: Steven on September 20, 2017, 08:58

Hello everyone,
               1. How does the  common tangent drawn between Energy-Volume Curves of two phases of the same compound give the transition pressure between the two phases thermodynamically?
               2.  I  read that the slope of the tangent  gives the transition pressure. The steeper the slope, the transition pressure becomes smaller. What is the relationship between the slope of the common tangent and the transition pressure in GPa?

Title: Re: Phase Transition Pressure
Post by: Petr Khomyakov on September 20, 2017, 09:42

I think you may consider looking up the literature to get a solid background on this issue; as a starting point you may take a look at the paper posted at http://pubs.rsc.org/en/content/articlehtml/2012/cp/c2cp41495c.

Title: Re: Phase Transition Pressure
Post by: Steven on September 20, 2017, 11:31

Thank you Sir