#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 11/02/2020

data_5yOhtAoR
_audit_creation_date            2020-11-02
_audit_creation_method          "Bilbao Crystallographic Server"


_chemical_name_common                    ?
_chemical_formula_moiety                 ?
_chemical_formula_structural             ?
_chemical_formula_analytical             ?
_chemical_formula_iupac                  ?
_chemical_formula_sum                    "La Mn2 Ge2"
_chemical_formula_weight                 ?
_chemical_melting_point                  ?
_chemical_compound_source                ?
_chemical_absolute_configuration         ?


_citation_journal_abbrev        "Journal of Alloys and Compounds"
_citation_journal_volume        210
_citation_page_first            213
_citation_page_last             220
_citation_article_id            ?
_citation_year                  1994
_citation_DOI                   10.1016/0925-8388(94)90141-4

loop_
_citation_author_name
"G. Venturini"
"R. Welter"
"E. Ressouche"
"B. Malaman"




_atomic_positions_source_database_code_ICSD  80507
_atomic_positions_source_other               .

_transition_temperature     322
_experiment_temperature     2

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mGM3+ 1  1  .  primary 1 .
mLD5  4  2  special primary 2 .

_exptl_crystal_magnetic_properties_details
;
NPD
Conical structure with necessarily two different propagation vectors involved
;

_active_magnetic_irreps_details
;
2k incommensurate structure
Maximal symmetry under the two relevant propagation vectors
;

_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 0.26


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

_space_group.magn_ssg_name  "I42'2'(0,0,g)-q00"
_space_group.magn_point_group_name  "42'2'"
_space_group.magn_point_group_number  12.4.43
_cell_length_a                 4.19000
_cell_length_b                 4.19000
_cell_length_c                 10.94800
_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
3 -x1,x2,-x3,-x4+1/2,-1
4 -x1,-x2,x3,x4+1/2,+1
5 -x2,-x1,-x3,-x4+1/4,-1
6 -x2,x1,x3,x4+3/4,+1
7 x2,-x1,x3,x4+1/4,+1
8 x2,x1,-x3,-x4+3/4,-1

loop_
_space_group_symop_magn_ssg_centering.id
_space_group_symop_magn_ssg_centering.algebraic
1 x1,x2,x3,x4,+1
2 x1+1/2,x2+1/2,x3+1/2,x4,+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_1 La 0.00000 0.00000 0.00000 1
Mn1_1 Mn 0.00000 0.50000 0.25000 1
Ge1_1 Ge 0.00000 0.00000 0.38000 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
Mn1_1 0.00000 0.00000 1.61(11) 0,0,Mz

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
Mn1_1 x 1 -2.6(4) 0.00000 Mxc1 Myc1
Mn1_1 y 1 0.00000 -2.6    Myc1 Mxc1
Mn1_1 z 1 0.00000 0.00000 0 0

