<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Aug 23, 2011, at 8:40 PM, bhabya sahoo wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">sir</blockquote><div><br></div>???</div><div><br><blockquote type="cite"><div>i am calculating the phase transition of some carbides</div><div>the transition from B1 to B2 transition occures at 130 gpa by enthalpy compparison </div></blockquote><div><br></div>OK</div><div><br><blockquote type="cite"><div>but i am able to find phonon instability at 130 gpa for B1 structure</div></blockquote><div><br></div>you mean, a phonon (which mode?) goes soft at the same pressure at which the enthalpies of the two phase coincide?</div><div><br><blockquote type="cite">
<div>but at the same time i am not able to find the dyanamic stability of B2 phase</div></blockquote><div><br></div>???</div><div><br><blockquote type="cite"><div>but it occures high pressure (more than130 gpa )</div></blockquote><div><br></div>???</div><div><br><blockquote type="cite"><div>is there any explanation for this ?</div></blockquote><div><br></div><div>explanation for WHAT?</div><div><br></div>what are you talking about? may we expect a somewhat more well thought and articulate question?</div><div><br><blockquote type="cite"><div>is there any relation of thermodyanamical unstability</div></blockquote><blockquote type="cite">
<div>and dyanamical unstability simultaneously?</div></blockquote><div><br></div><div>???</div></div><div><br><blockquote type="cite"><div>answers are highly appriceted with some reson</div></blockquote><div><br></div>well-thought and well documented questions questions would be even more appreciAted for any reAson ...</div><div><br></div><div>SB</div><div><br></div><div>
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