#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 04/03/2021

data_5yOhtAoR
_audit_creation_date            2021-04-03
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "Journal of Alloys and Compounds"
_citation_journal_volume        224
_citation_page_first            253
_citation_page_last             261
_citation_article_id            .
_citation_year                  1995
_citation_DOI                   10.1016/0925-8388(95)01545-0

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

_atomic_positions_source_database_code_ICSD  79939
_atomic_positions_source_other               .

_temperature_position_structure         4
_temperature_atom_positions             .              
_temperature_non-magn_atom_positions    .
_temperature_cell_parameters            .


_transition_temperature     3.1
_experiment_temperature     1.38

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mLD4 2 1 general primary 1 .
mLD5 4 2 special primary 1 .

_exptl_crystal_magnetic_properties_details
;
NPD
Position structure from a determination at 4K
The direction of the Dy moment component on the xy basal plane is undetermined. Here a direction of maximal symmetry has been assumed.
Er moment angle with the c axis: 64 degrees
Dy moment amplitude: 8.3(3)
;

_active_magnetic_irreps_details
;
1k incommensurate magnetic structure
Two irreps as primary: two order parameters in the sense of Landau theory are present.
;

_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'

_cell_modulation_dimension               1

loop_
_cell_wave_vector_seq_id
_cell_wave_vector_x
_cell_wave_vector_y
_cell_wave_vector_z
1 0.00000 0.00000 0.757

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

_space_group.magn_ssg_name  "I2/m111'(0,0,g)0ss"
_space_group.magn_point_group_name  "2/m1'"
_space_group.magn_point_group_number  5.2.13
_cell_length_a                 4.03900
_cell_length_b                 4.03900
_cell_length_c                 9.80300
_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,-x2,-x3,-x4+1/2,+1
3 -x1,-x2,-x3,-x4,+1
4 -x1,x2,x3,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
3 x1+1/2,x2+1/2,x3+1/2,x4,+1
4 x1+1/2,x2+1/2,x3+1/2,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
Er1 Er 0.00000 0.00000 0.00000 1
Ni1 Ni 0.00000 0.50000 0.25000 1
Ge1 Ge 0.00000 0.00000 0.37600 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
Er1 0.00000 0.00000 0.00000 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
Er1 x 1 0.00000 0.00000 0 0
Er1 y 1 7.46 0.00000 myc1 0
Er1 z 1 3.64 0.00000 mzc1 0

