#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 16/04/2020

data_5yOhtAoR
_audit_creation_date            2020-04-16
_audit_creation_method          "Bilbao Crystallographic Server"

citation_journal_abbrev        "PHYSICAL REVIEW B"
_citation_journal_volume        31
_citation_page_first            508
_citation_page_last             516
_citation_article_id            ?
_citation_year                  1985
_citation_DOI                   10.1103/PhysRevB.31.508

loop_
_citation_author_name
"H. Pinto"
"M. Melamud"
"M. Kuznietz"
"H. Shaked"



_atomic_positions_source_database_code_ICSD  629186
_atomic_positions_source_other               .

_transition_temperature  13
_experiment_temperature  4.2

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mN1+ 1  1  . primary  1  .
mN2+ 1  1  . primary  2  .

_exptl_crystal_magnetic_properties_details
;
NPD
Tb moment: 8.6
See entry #1.363 for another model of this structure with a quite different Tb moment orientation.
;

_active_magnetic_irreps_details
;
1k magnetic structure
2 irreps as primary: 2 order parameters present in the sense of Landau theory
;

_parent_space_group.name_H-M_alt  'I 4/m m m'
_parent_space_group.IT_number                       139
_parent_space_group.transform_Pp_abc  'a,b,c;0,0,0'

loop_
_parent_propagation_vector.id
_parent_propagation_vector.kxkykz
k1 [1/2 0 1/2]

_parent_space_group.child_transform_Pp_abc  '2a,b,2c;0,0,0'
_space_group_magn.transform_BNS_Pp_abc  '1/4a+1/2b-1/4c,-1/4a+1/2b+1/4c,1/2a-b+1/2c;0,0,0'



_space_group_magn.number_BNS  2.7
_space_group_magn.name_BNS  "P_S -1"
_cell_length_a             7.96800
_cell_length_b             3.98400
_cell_length_c             19.89400
_cell_angle_alpha          90.00
_cell_angle_beta           90.00
_cell_angle_gamma          90.00

loop_
_space_group_symop_magn_operation.id
_space_group_symop_magn_operation.xyz
1 x,y,z,+1
2 -x,-y,-z,+1

loop_
_space_group_symop_magn_centering.id
_space_group_symop_magn_centering.xyz
1 x,y,z,+1
2 x+1/4,y+1/2,z+3/4,+1
3 x+1/2,y,z+1/2,+1
4 x+3/4,y+1/2,z+1/4,+1
5 x+1/4,y+1/2,z+1/4,-1
6 x+1/2,y,z,-1
7 x+3/4,y+1/2,z+3/4,-1
8 x,y,z+1/2,-1

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Cu1 Cu 0.00000 0.50000 0.12500
Si1 Si 0.00000 0.00000 0.19250
Tb1 Tb 0.00000 0.00000 0.00000

loop_
_atom_site_moment.label
_atom_site_moment.crystalaxis_x
_atom_site_moment.crystalaxis_y
_atom_site_moment.crystalaxis_z
_atom_site_moment.symmform
Tb1 6.08 6.08 0.0 mx,my,mz

