#\#CIF_2.0
# Created by the Bilbao Crystallographic Server
# http://www.cryst.ehu.es
# Date: 15/04/2020

data_5yOhtAoR
_audit_creation_date            2020-04-15
_audit_creation_method          "Bilbao Crystallographic Server"

_citation_journal_abbrev        "Journal of Alloys and Compounds"
_citation_journal_volume        262-263
_citation_page_first            492
_citation_page_last             497
_citation_article_id            ?
_citation_year                  1997
_citation_DOI                   10.1016/S0925-8388(97)00316-2

loop_
_citation_author_name
"O. Oleksyn"
"P. Schobinger-Papamantellos"
"C. Ritter"
"C. de Groot"
"K. Buschow"



_atomic_positions_source_database_code_ICSD  84343
_atomic_positions_source_other               .

_transition_temperature  6
_experiment_temperature  1.4

loop_
_irrep_id
_irrep_dimension
_irrep_small_dimension
_irrep_direction_type
_irrep_action
_irrep_modes_number
_irrep_presence
mY4-  1  1  .  primary  1  .
mY3-  1  1  .  primary  3  .

_exptl_crystal_magnetic_properties_details
;
NPD
The two Dy sites order independently. Below T_N=19K only Dy1 is ordered up to 6K, where Dy2 orders with a further symmetry break.
;

_active_magnetic_irreps_details
;
1k magnetic structure
Two irreps involved as primary: two distinct order parameters corresponding to the two Dy sites, which order separately.
;

_parent_space_group.name_H-M_alt  'C m c m'
_parent_space_group.IT_number                       63
_parent_space_group.transform_Pp_abc  'a,b,c;0,0,0'

loop_
_parent_propagation_vector.id
_parent_propagation_vector.kxkykz
k1 [0 1 0]

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



_space_group_magn.number_BNS  11.55
_space_group_magn.name_BNS  "P_a 2_1/m"
_cell_length_a             4.0242(9)
_cell_length_b             10.602(3)
_cell_length_c             14.175(4)
_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+1/2,-y+1/2,-z,+1
4 x,y,-z+1/2,+1

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

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Dy1 Dy 0.00000 0.3336(9) 0.0987(9)
Dy2 Dy 0.00000 0.055(2) 0.25000
Ge1 Ge 0.00000 0.353(5) 0.888(2)
Ge2 Ge 0.00000 0.789(6) 0.25000
Ge3 Ge 0.00000 0.00000 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
Dy1 7.36(8) 0.00000 0.00000 mx,my,mz
Dy2 0.00000 0.00000 -5.7(3) 0,0,mz


