Index

Magnetic structures (magCIF) version 0.9.8

_space_group_magn.name_BNS

Definition:

   
     See _space_group_magn_number_OG for a description of magnetic
     space groups (MSGs).
     The Belov-Neronova-Smirnova (BNS) symbol for a MSG is based on
     the short Hermann-Mauguin space-group symbol of non-magnetic
     space group F for MSGs of types 1-3 or its subgroup D for MSGs of
     type 4. For a type-1 MSG, the symbol for the MSG is identical
     with the unprimed symbol of F.  For a type-2 MSG, its symbol is
     the symbol of the space group F followed by 1'.  For a type-3
     MSG, one starts with the symbol for F and then primes any
     non-translational  generators whose corresponding MSG elements are
     time reversed. For a type-4 MSG, the non-translational generators
     are never primed. A subscript always appears on the first
     (lattice) character of the symbol of a type-4 MSG, and
     communicates that a pure time-reversal element is included in the
     point group of the MSG. The value of this subscript indicates the
     magnetic lattice of the MSG, and specifically indicates the
     translational part of the generator whose point part is the pure
     time reversal. Note that OG and BNS symbols are identical for
     MSGs of types 1-3, but differ substantially  for MSGs of type 4.

     Analogous tags: symCIF:_space_group.name_H-M_ref

     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