#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 03/01/2021 

data_5yOhtAoR
_audit_creation_date            2021-03-01
_audit_creation_method          "Bilbao Crystallographic Server"


_citation_journal_abbrev        "Journal of Magnetism and Magnetic Materials"
_citation_journal_volume        116
_citation_page_first            375
_citation_page_last             385
_citation_article_id            .
_citation_year                  1992
_citation_DOI                   10.1016/0304-8853(92)90119-9

loop_
_citation_author_name
"G. Andre"
"F. Bouree"
"M. Kolenda"
"A. Oles"
"A. Pacyna"
"M. Pinot"
"W. Sikora"
"A. Szytula"

_atomic_positions_source_database_code_ICSD  57101
_atomic_positions_source_other               .

_transition_temperature     17.5
_experiment_temperature     14.65

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mV2 4 1 . primary 6 .

_exptl_crystal_magnetic_properties_details
;
NPD
Position structure from a determination at 35K
;

_active_magnetic_irreps_details
;
1k incommensurate structure
2-dim extended (k,-k) small irrep as primary
k-maximal magnetic symmetry
The star of the irrep has 2 pairs of (k,-k) vectors. 2-k arrangements involving also the other (k,-k) pair of the irrep star were not considered.
;

_parent_space_group.name_H-M_alt  'P n m a
_parent_space_group.IT_number             62
_parent_space_group.transform_Pp_abc  'a,b,c;0,0,0'

_cell_modulation_dimension               1

loop_
_cell_wave_vector_seq_id
_cell_wave_vector_x
_cell_wave_vector_y
_cell_wave_vector_z
1 0.716 0.30900 0.00000


_parent_space_group.child_transform_Pp_abc    'a,b,c;0,0,0'

_space_group.magn_ssg_name  "P112_1/a1'(a,b,0)0ss"
_space_group.magn_point_group_name  "2/m1'"
_space_group.magn_point_group_number  5.2.13
_cell_length_a                 6.94990
_cell_length_b                 4.23060
_cell_length_c                 7.28130
_cell_angle_alpha              90.00000
_cell_angle_beta               90.00000
_cell_angle_gamma              90.00000

loop_
_space_group_symop_magn_ssg_operation.id
_space_group_symop_magn_ssg_operation.algebraic
1 x1,x2,x3,x4,+1
2 -x1+1/2,-x2,x3+1/2,-x4+1/2,+1
3 -x1,-x2,-x3,-x4,+1
4 x1+1/2,x2,-x3+1/2,x4+1/2,+1

loop_
_space_group_symop_magn_ssg_centering.id
_space_group_symop_magn_ssg_centering.algebraic
1 x1,x2,x3,x4,+1
2 x1,x2,x3,x4+1/2,-1

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Ni1_1 Ni 0.19450 0.25000 0.08470 1
Tb1_1 Tb 0.00000 0.25000 0.70710 1
Ge1_1 Ge 0.30550 0.25000 0.41530 1


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_1 0.00000 0.00000 0.00000 0,0,0  0.0

loop_
_atom_site_Fourier_wave_vector.seq_id
_atom_site_Fourier_wave_vector.q1_coeff
1 1

loop_
_atom_site_moment_Fourier.atom_site_label
_atom_site_moment_Fourier.axis
_atom_site_moment_Fourier.wave_vector_seq_id
_atom_site_moment_Fourier_param.cos
_atom_site_moment_Fourier_param.sin
_atom_site_moment_Fourier_param.cos_symmform
_atom_site_moment_Fourier_param.sin_symmform
Tb1_1 x 1 9.0 0.0         mxc1 mxs1
Tb1_1 y 1 0.00000 0.00000 myc1 mys1
Tb1_1 z 1 0.00000 0.00000 mzc1 mzs1

