A
reversible or
irreversible transition
that involves a change of the crystal structure.
Example:
The transition of
NH4Cl at 469 K from a
CsCl-type structure to a
NaCl-type structure.
Source:
PAC, 1994, 66, 577
(Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations
1994))
on page 591