On Aug 23, 2011, at 8:40 PM, bhabya sahoo wrote: > sir
??? > i am calculating the phase transition of some carbides > the transition from B1 to B2 transition occures at 130 gpa by enthalpy > compparison OK > but i am able to find phonon instability at 130 gpa for B1 structure you mean, a phonon (which mode?) goes soft at the same pressure at which the enthalpies of the two phase coincide? > but at the same time i am not able to find the dyanamic stability of B2 phase ??? > but it occures high pressure (more than130 gpa ) ??? > is there any explanation for this ? explanation for WHAT? what are you talking about? may we expect a somewhat more well thought and articulate question? > is there any relation of thermodyanamical unstability > and dyanamical unstability simultaneously? ??? > answers are highly appriceted with some reson well-thought and well documented questions questions would be even more appreciAted for any reAson ... SB --- Stefano Baroni - SISSA & DEMOCRITOS National Simulation Center - Trieste http://stefano.baroni.me [+39] 040 3787 406 (tel) -528 (fax) / stefanobaroni (skype) La morale est une logique de l'action comme la logique est une morale de la pens?e - Jean Piaget -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.democritos.it/pipermail/pw_forum/attachments/20110823/83e276ad/attachment.htm
