#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 08/01/2019

data_5yOhtAoR
_audit_creation_date            2019-01-08
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "Journal of Magnetism and Magnetic Materials"
_citation_journal_volume        54-57
_citation_page_first            1005
_citation_page_last             1006
_citation_article_id            ?
_citation_year                  1986
_citation_DOI                   10.1016/0304-8853(86)90355-0

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




_atomic_positions_source_database_code_ICSD  26375
_atomic_positions_source_other               .

_transition_temperature  65.3
_experiment_temperature  10

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: 4.41(5) for Fe1 and 4.4(5) for Fe22
Magnetic structures, similar but with different moments, are reported in the same reference for T=23K, 35K and 50K
Similar to Co2SiO4 (see #0.218 and #0.219)
;

_active_magnetic_irreps_details
;
1k magnetic structure
k-maximal magnetic symmetry (8 possible)
1-dim irrep active
A model of lower symmetry with more than one irrep active was proposed in (Santoro et al., J. Phys. Chem. Solids 27, 655 (1964)). This alternative model according to this later reference can be discarded.
;

_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             10.47880
_cell_length_b             6.08730
_cell_length_c             4.81950
_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
Fe1 Fe 0.00000 0.00000 0.00000
Fe2 Fe 0.28026 0.25000 0.98598
Si1 Si 0.09765 0.25000 0.43122
O1 O 0.09217 0.25000 0.76814
O2 O 0.45365 0.25000 0.20895
O3 O 0.16563 0.03643 0.28897

loop_
_atom_site_moment.label
_atom_site_moment.crystalaxis_x
_atom_site_moment.crystalaxis_y
_atom_site_moment.crystalaxis_z
_atom_site_moment.symmform
Fe1 1.37 3.40 2.51 mx,my,mz
Fe2 0.0 4.4 0.0 0,my,0
