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


data_5yOhtAoR
_audit_creation_date            2018-10-18
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "Journal of Alloys and Compounds"
_citation_journal_volume        237
_citation_page_first            9
_citation_page_last             19
_citation_article_id            ?
_citation_year                  1996
_citation_DOI                   10.1016/0925-8388(95)02066-7

loop_
_citation_author_name
"S.L. Brock"
"N. Raju"
"J. Greedan"
"S.M. Kauzlarich"




_atomic_positions_source_database_code_ICSD  81792
_atomic_positions_source_other               ?

_transition_temperature  65
_experiment_temperature  4

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mGM2-  1  1  .  primary  1  .
mX4+   2  1  .  primary  1  .

_exptl_crystal_magnetic_properties_details
;
NPD
Mn2 and Mn1 moments order in two separate transitions (at 300K and 65K, respectively)
;

_active_magnetic_irreps_details
;
2k magnetic structure
2k-maximal symmetry
2 irreps active (irrep mGM2- for Mn2 and irrep mX4+ for Mn1)
The orthogonality of the spins in the two sublattices is symmetry protected.
If insulator, linear magnetoelectricity is to be expected.
;

_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'

loop_
_parent_propagation_vector.id
_parent_propagation_vector.kxkykz
k1 [0 0 0]
k2 [1/2 1/2 0]

_parent_space_group.child_transform_Pp_abc  'a+b,-a+b,c;0,0,0'
_space_group_magn.transform_BNS_Pp_abc  '-c,b,a;1/4,-1/4,0'



_space_group_magn.number_BNS  63.459
_space_group_magn.name_BNS  "C m' c m"
_cell_length_a             6.01730
_cell_length_b             6.01730
_cell_length_c             20.07400
_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
3 x+1/2,-y+1/2,z,+1
4 -x,y,z,+1
5 -x,y,-z,-1
6 x+1/2,-y+1/2,-z,-1
7 -x+1/2,-y+1/2,-z,-1
8 x,y,-z,-1

loop_
_space_group_symop_magn_centering.id
_space_group_symop_magn_centering.xyz
1 x,y,z,+1
2 x,y+1/2,z+1/2,+1

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Sr1 Sr 0.00000 0.00000 0.42100
Mn1 Mn 0.00000 0.00000 0.00000
Mn2 Mn 0.25000 0.25000 0.25000
Sb1 Sb 0.00000 0.00000 0.16220
O1_1 O 0.25000 0.25000 0.00000
O1_2 O 0.25000 0.75000 0.00000

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 4.2(3) 0.00000 0.00000 mx,0,0
Mn2 0.00000 0.00000 3.5(1) 0,0,mz

