#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 03/12/2020

data_5yOhtAoR
_audit_creation_date            2020-03-12
_audit_creation_method          "Bilbao Crystallographic Server"



_citation_journal_abbrev        "PHYSICAL REVIEW LETTERS"
_citation_journal_volume        124
_citation_page_first            ?
_citation_page_last             ?
_citation_article_id            017202
_citation_year                  2020
_citation_DOI                   10.1103/PhysRevLett.124.017202

loop_
_citation_author_name
"P. Puphal"
"V. Pomjakushin"
"N. Kanazawa"
"V. Ukleev"
"D.J. Gawryluk"
"J. Ma"
"M. Naamneh"
"N.C. Plumb"
"L. Keller"
"R. Cubitt"
"E. Pomjakushina"
"J.S. White"




_atomic_positions_source_database_code_ICSD  .
_atomic_positions_source_other               .

_transition_temperature     4.4
_experiment_temperature     1.5

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mSM2 4 1 special-2 primary 4 .

_exptl_crystal_magnetic_properties_details
;
NPD
;

_active_magnetic_irreps_details
;
2k incommensurate magnetic structure
2k-maximal magnetic symmetry
A 1k incommensurate structure model equally fits the data. The 2k model of higher symmetry is prioritized in the reference.
1-dim small irrep and 4-dim full irrep along a special direction as primary irrep, corresponding to the in-phase superposition with equal amplitudes of the two modulations with perpendicular k-vectors.
;

_parent_space_group.name_H-M_alt "I 4_1 m d"
_parent_space_group.IT_number             109
_parent_space_group.transform_Pp_abc  a,b,c;0,0,0

_cell_modulation_dimension               2

loop_
_cell_wave_vector_seq_id
_cell_wave_vector_x
_cell_wave_vector_y
_cell_wave_vector_z
1 0.06600 0.00000 0.00000
2 0.00000 0.06600 0.00000


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

_space_group.magn_ssg_name  "I4_1md1'(a,0,0)000s(0,a,0)0s0s"
_space_group.magn_point_group_name  "4mm1'"
_space_group.magn_point_group_number  13.2.45
_cell_length_a                 4.25717
_cell_length_b                 4.25717
_cell_length_c                 14.64520
_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,x5,+1
2 -x1,-x2,x3,-x4,-x5,+1
3 -x2,x1+1/2,x3+1/4,-x5,x4,+1
4 x2,-x1+1/2,x3+1/4,x5,-x4,+1
5 -x1,x2,x3,-x4+1/2,x5+1/2,+1
6 x1,-x2,x3,x4+1/2,-x5+1/2,+1
7 x2,x1+1/2,x3+1/4,x5+1/2,x4+1/2,+1
8 -x2,-x1+1/2,x3+1/4,-x5+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,x5,+1
2 x1,x2,x3,x4+1/2,x5+1/2,-1
3 x1+1/2,x2+1/2,x3+1/2,x4,x5,+1
4 x1+1/2,x2+1/2,x3+1/2,x4+1/2,x5+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
Al1 Al 0.00000 0.00000 0.18000 1
Ce1 Ce 0.00000 0.00000 0.59000 1
Ge1 Ge 0.00000 0.00000 0.01000 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
Ce1 0.0 0.0 0.0  0,0,0

loop_
_atom_site_Fourier_wave_vector.seq_id
_atom_site_Fourier_wave_vector.q1_coeff
_atom_site_Fourier_wave_vector.q2_coeff
1 1 0
2 0 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
Ce1 x 1 0.00000 0.44(1) 0 mxs1
Ce1 y 1 0.00000 0.00000 0 0
Ce1 z 1 -0.21(5) 0.00000 mzc1 0
Ce1 x 2 0.00000 0.00000 0 0
Ce1 y 2 0.00000 1.02(1) 0 mys2
Ce1 z 2 0.29(7) 0.00000 mzc2 0

