[Wien] After Phase transition-crystal structure

[Mr C.A. Bridges]

It depends if you can give a simple classification to your transition.
For second-order phase transitions the symmetry lowers on going through
the transition to a subgroup of the higher symmetry structure. For
first-order phase transitions, there is no real restriction (though I
have seen it claimed before).
Unfortunately, many systems do not simply fall within the first/second
order classification.

Craig



On Tue, 25 Nov 2003, Neerja wrote:

>Dear all
>
>Anyone can give me some idea, about crystal structure, in case of phase
>transition.
>
>I mean, there may some rules for phase transitions from one crystal
>structure to other.
>
>I shall be very thnakful to all of you.
>Regards
>Neerja
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