_space_group_symop_magn_ssg_centering.algebraic

Name:
_space_group_symop_magn_ssg_centering.algebraic

Definition:

   
     A parsable string giving one of the centering or anti-centering
     operations of the magnetic superspace group in algebraic form.
     The form of such a string is identical to that expected for
     _space_group_symop_magn_ssg_operation.algebraic, except that the
     rotational part of a translation must always be the identity
     element.  See the description of
     _space_group_symop_magn_centering.id for more information about
     centering loops. This tag is intended for use with the BNS
     description of the magnetic basic cell.

Examples:

x1,x2,x3,x4,x5,+1 the identity element in (3+2)D

x1,x2,x3,x4+1/2,-1 a time-reversed superspace translation in (3+1)D based on a simple 180-degree phase shift of a single modulation vector'

x1+1/2,x2+1/2,x3+1/2,x4,+1 a non-time-reversed external body-center translation in (3+1)D

x1+1/2,x2,x3,x4,x5,x6+3/2,-1 a time-reversed superspace translation in (3+3)D that combines internal and external shifts

Type: Text

Category:
space_group_symop_magn_ssg_centering

		contents
		indexes
		sample pages
		purchase
		CIF dictionaries

Crystallographic Information Framework

Magnetic structures (magCIF) version 0.9.8

_space_group_symop_magn_ssg_centering.algebraic

International Tables for Crystallography

Volume G: Definition and exchange of crystallographic data

Edited by S. R. Hall and B. McMahon

IUCrData