#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 07/01/2019


data_5yOhtAoR
_audit_creation_date            2019-01-07
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "Phys. Stat. Sol."
_citation_journal_volume        109
_citation_page_first            589
_citation_page_last             595
_citation_article_id            ?
_citation_year                  1988
_citation_DOI                   10.1002/pssa.2211090226

loop_
_citation_author_name
"W. Lottermoser"
"H. Fuess"




_atomic_positions_source_database_code_ICSD  260092
_atomic_positions_source_other               .

_transition_temperature  49.5
_experiment_temperature  2

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mGM1+  1  1  .  primary  4  .

_exptl_crystal_magnetic_properties_details
;
NSD
Moment moduli: 3.9(1) for Co1 and 3.64(8) for Co2
Magnetic structures, similar but with different moments, are reported in the same reference for T=20K and 40K
A collinear model under the same symmetry was earlier proposed in (Nomura et al., J. Phys. Chem. Solids 25, 901 (1964))
Sazonov et al (Acta Cryst. (2009) B65, 664) report a similar model (see #0.219). The positional structure used here at 2.5K is from this reference.
Similar to Fe2SiO4 (see #0.221)
;

_active_magnetic_irreps_details
;
1k magnetic structure
k-maximal magnetic symmetry (8 possible)
1-dim irrep active
;

_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'

loop_
_parent_propagation_vector.id
_parent_propagation_vector.kxkykz
k1 [0 0 0]

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



_space_group_magn.number_BNS  62.441
_space_group_magn.name_BNS  "P  n  m  a"
_cell_length_a             10.28640
_cell_length_b             5.98720
_cell_length_c             4.77850
_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+1/2,-y+1/2,-z+1/2,+1
3 -x,y+1/2,-z,+1
4 -x+1/2,-y,z+1/2,+1
5 -x,-y,-z,+1
6 -x+1/2,y+1/2,z+1/2,+1
7 x,-y+1/2,z,+1
8 x+1/2,y,-z+1/2,+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
Co1 Co 0.00000 0.00000 0.00000
Co2 Co 0.27597 0.25000 0.99115
Si1 Si 0.09479 0.25000 0.42838
O1 O 0.09180 0.25000 0.76731
O2 O 0.44854 0.25000 0.21605
O3 O 0.16438 0.03313 0.28129

loop_
_atom_site_moment.label
_atom_site_moment.crystalaxis_x
_atom_site_moment.crystalaxis_y
_atom_site_moment.crystalaxis_z
_atom_site_moment.symmform
Co1 0.94000 3.74000 0.47000 mx,my,mz
Co2 0.00000 3.64000 0.00000 0,my,0
