Index

Magnetic structures (magCIF) version 0.9.8

_space_group_magn.number_BNS

Definition:

   
     See _space_group_magn.number_OG for a description of magnetic
     space groups (MSGs). The Belov-Neronova-Smirnova (BNS) number for
     an MSG is composed of two positive integers separated by a
     period. The first integer lies in the range [1-230] and indicates
     the non-magnetic space group F for MSGs of types 1-3 or the
     non-magnetic space group of the subgroup D for MSGs of type 4.  The
     second integer is sequential over all MSGs associated  with the
     same crystal family.
     There are 1651 distinct equivalence classes of MSGs, each of
     which has a unique BNS number. These equivalence classes are most
     accurately referred to as magnetic space-group "types",
     following the usage in the International Tables for Crystallography.
     But the word "type"  is also commonly used to
     indicate the four-fold classification of MSGs presented above.
     To avoid confusion, the word "type" is only used in the latter
     sense here.

     Analogous tags: symCIF:_space_group.number_IT

     Ref: 'Magnetic Group Tables' by D.B. Litvin at
     http://www.iucr.org/publ/978-0-9553602-2-0. ISO-MAG tables of H.T.
     Stokes and B.J. Campbell at http://iso.byu.edu.

Type: Text

Category: space_group_magn