Index
Magnetic structures (magCIF) version 0.9.8
_space_group_magn.point_group_name
Name:
_space_group_magn.point_group_name
Definition:
Any magnetic point group (MPG) can be constructed by starting
with a non-magnetic point group P, and then by adding a time-reversal
component to some or all or none of its elements. For a
type-1 MPG, M = P, there are no time-reversed elements. For a
type-2 MPG, M = P + P1', there is both a time-reversed and a
non-time-reversed copy of each element in P. For a type-3 MPG,
M = Q + (P - Q)1', there is a subgroup Q of P of index 2 whose
elements are not time reversed, whereas the remaining elements
in P-Q are time reversed. For a type-1 MPG, the symbol is identical
with the symbol for the non-magnetic point group P. For a type-2 MPG,
the symbol is the symbol for P followed by the symbol 1'. For a
type-3 MPG, the symbol is that of P with a prime added to each
time-reversed generator.
Analogous tags: symCIF:_space_group.point_group_H-M
Ref: 'Magnetic Group Tables' by D.B. Litvin at
http://www.iucr.org/publ/978-0-9553602-2-0
Examples:
Type: Text
Category:
space_group_magn