MAGNDATA - Collection of Magnetic Structures

MAGNDATA

Collection of Magnetic Structures

MAGNDATA: A Collection of magnetic structures with portable cif-type files

Magnetic structure with all atoms

Magnetic structure with only magnetic atoms

Reference: Y. Xiao, Y. Su, M. Meven, R. Mittal, C.M.N. Kumar, T. Chatterji, S. Price, J. Persson, N. Kumar, S.K. Dhar, A. Thamizhavel and T. Brueckel, Physical Review B (2009) 80.
DOI: 10.1103/physrevb.80.174424
Atomic positions from: same reference

Parent space group (paramagnetic phase): I4/mmm (#139)
Propagation vector(s):
k1 (1/2, 1/2, 0)
k2 (0, 0, 1)

Transition Temperature: 19 K
Experiment Temperature: 2.5 K

Lattice parameters of the magnetic unit cell:
5.537 5.505 12.057 90.0000 90.0000 90.0000
Transformation from parent structure: (a+b,-a+b,c;0,0,0)
    [View matrix form]

BNS Magnetic Space Group: P_Cbca (#61.439) (non-standard)
    [View symmetry operations]
Transformation to a standard setting: (b,c,a;0,0,0)
    [View matrix form]
Systematic absences for this Magnetic Space Group via

Magnetic Point Group: mmm.1' (8.2.25)
    [View symmetry operations]
Symmetry-adapted form of material tensors via
Symmetry-adapted form of material tensors for domain-related equivalent structures via

Positions and magnetic moments of symmetry independent atoms:
From now on, magnetic atoms are in boldface and colored in red. Magnetic moments are expressed in units of μB

     [Show only magnetic atoms]                                             Use MVISUALIZE to:
     [Show all the atoms]

Label	Atom type	x	y	z	Multiplicity	Symmetry constraints on M	M_x	M_y	M_z	\|M\|
Eu1	Eu	0.00000	0.00000	0.00000	4	m_x,0,m_z	6.8(3)	0.0	0.0	6.80
Fe1	Fe	0.25000	0.25000	0.25000	8	m_x,m_y,0	-0.98(8)	0.0	0.0	0.98

[Show all magnetic atoms in unit cell and their moment relations]

Active Irreps:

label	dim. small irrep	dim. full irrep	action
mX2+	1	2	primary
mM5+	1	2	primary

Comments:

NSD
The two magnetic atoms ardor according to different k-vectors: Fe1 (k1) and Eu (k2) and at different temperatures (190 and 19)

Comments (symmetry):

2k magnetic structure
the wave vectors are given in the setting of the parent tetragonal phase, while in the reference they are described in the Fmmm setting.

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