Preferred Label : dilational transition;
Detailed label : dilational (dilatational) transition;
IUPAC definition : A transition in which the crystal structure is dilated (or compressed) along one (or
more) crystallographic direction(s) while the symmetry about that direction is retained.
Examples: ol li The transition of a CsCl-type structure to a rock salt structure
in which dilation occurs along the three-fold axis. /li li The transition at T
D in quenched NiS in which volume expansion occurs without change of symmetry on going
from a metallic state (T T D) to a semiconducting state (T T D). /li /ol ;
Origin ID : D01733;
See also
A transition in which the crystal structure is dilated (or compressed) along one (or
more) crystallographic direction(s) while the symmetry about that direction is retained.
Examples: ol li The transition of a CsCl-type structure to a rock salt structure
in which dilation occurs along the three-fold axis. /li li The transition at T
D in quenched NiS in which volume expansion occurs without change of symmetry on going
from a metallic state (T T D) to a semiconducting state (T T D). /li /ol
