#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 19/11/2020

data_5yOhtAoR
_audit_creation_date            2020-11-19
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "Journal of Alloys and Compounds"
_citation_journal_volume        731
_citation_page_first            397
_citation_page_last             402
_citation_article_id            .
_citation_year                  2018
_citation_DOI                   10.1016/j.jallcom.2017.10.050

loop_
_citation_author_name
"E. Gerasimov"
"N. Mushnikov"
"P. Terentev"
"A. Pirogov"




_atomic_positions_source_database_code_ICSD  106811
_atomic_positions_source_other               .

_transition_temperature  ?
_experiment_temperature  293

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mM1-  1  1  .  primary  1  .
mGM5- 2  2  special primary 1 .

_exptl_crystal_magnetic_properties_details
;
NPD
Transition temperature not provided
Position structure not provided. Here that of LaMn2Si2 at 305K from a different study retrieved from ICSD is used, changing the Tb site by a La/Tb mixed site.
Similar structures at 293K and at 4.2K for other mixed La/Tb compositions are also reported in the same article.
;

_active_magnetic_irreps_details
;
2k magnetic structure
k-maximal symmetry
Two irreps with different k-vectors involved: two 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 1 1]
k2 [0 0 0]

_parent_space_group.child_transform_Pp_abc  'a,b,c;0,0,0'
_space_group_magn.transform_BNS_Pp_abc  'a,-c,b;0,0,0'



_space_group_magn.number_BNS  58.396
_space_group_magn.name_BNS  "P n n m'"
_cell_length_a             3.93100
_cell_length_b             3.93100
_cell_length_c             10.45600
_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
3 -x+1/2,y+1/2,z+1/2,+1
4 x+1/2,y+1/2,-z+1/2,+1
5 x+1/2,-y+1/2,-z+1/2,-1
6 -x+1/2,-y+1/2,z+1/2,-1
7 -x,-y,-z,-1
8 x,-y,z,-1

loop_
_space_group_symop_magn_centering.id
_space_group_symop_magn_centering.xyz
1 x,y,z,+1

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
La1 la1 0.00000 0.00000 0.00000  0.6
Tb1 Tb 0.00000 0.00000 0.00000   0.4
Mn1 Mn 0.00000 0.50000 0.25000   1.0
Si1 Si 0.00000 0.00000 0.37500   1.0

loop_
_atom_site_moment.label
_atom_site_moment.crystalaxis_x
_atom_site_moment.crystalaxis_y
_atom_site_moment.crystalaxis_z
_atom_site_moment.symmform
_atom_site_moment.magnitude
Tb1 0.00000 0.00000 0.00000 0,0,0     0.0
Mn1 0.95(2) 0.00000 1.02(3) mx,0,mz   1.39(2)

