MAGNDATA - Collection of Magnetic Structures

MAGNDATA

Collection of Magnetic Structures

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

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Magnetic structure with all atoms

Magnetic structure with only magnetic atoms

N	(x,y,z)	Seitz notation
1	x,y,z,+1	{ 1 \| 0 }
2	x+1/2,-y+1/2,-z+1/2,+1	{ 2₁₀₀ \| 1/2 1/2 1/2 }
3	-x,-y,-z,+1	{ -1 \| 0 }
4	-x+1/2,y+1/2,z+1/2,+1	{ m₁₀₀ \| 1/2 1/2 1/2 }
5	-x,y+1/2,-z,-1	{ 2'₀₁₀ \| 0 1/2 0 }
6	-x+1/2,-y,z+1/2,-1	{ 2'₀₀₁ \| 1/2 0 1/2 }
7	x,-y+1/2,z,-1	{ m'₀₁₀ \| 0 1/2 0 }
8	x+1/2,y,-z+1/2,-1	{ m'₀₀₁ \| 1/2 0 1/2 }

N	(x,y,z)	Seitz notation
1	x,y,z,+1	1
2	x,-y,-z,+1	2₁₀₀
3	-x,-y,-z,+1	-1
4	-x,y,z,+1	m₁₀₀
5	-x,y,-z,-1	2'₀₁₀
6	-x,-y,z,-1	2'₀₀₁
7	x,-y,z,-1	m'₀₁₀
8	x,y,-z,-1	m'₀₀₁

Label	Atom type	x	y	z	Multiplicity
Ni1	Ni	0.0362(2)	0.25000	0.6269(4)	4

Atom	x	y	z	Symmetry constraints on M	M_x	M_z
1	0.18140	0.25000	0.13320	m_x,0,m_z	6.98000	-3.39000
2	0.68140	0.25000	0.36680	m_x,0,-m_z	6.98000	3.39000
3	0.81860	0.75000	0.86680	m_x,0,m_z	6.98000	-3.39000
4	0.31860	0.75000	0.63320	m_x,0,-m_z	6.98000	3.39000

Atom	x	y	z
1	0.03620	0.25000	0.62690
2	0.53620	0.25000	0.87310
3	0.96380	0.75000	0.37310
4	0.46380	0.75000	0.12690

Reference: X.-Q. Zheng and B.-G. Shen, Chinese Physics B (2017) 26 027501.
DOI: 10.1088/1674-1056/26/2/027501
Atomic positions from: ICSD #235976

Parent space group (paramagnetic phase): Pnma (#62)
Propagation vector: k1 (0, 0, 0)

Transition Temperature: 35.5 K
Experiment Temperature: 20 K

Lattice parameters of the magnetic unit cell:
6.9764(1) 4.15478(3) 5.4016(1) 90.00 90.00 90.00
Transformation from parent structure: (a,b,c;0,0,0)
    [View matrix form]

BNS Magnetic Space Group: Pnm'a' (#62.447) (standard setting)
    [View symmetry operations]
Transformation to a standard setting: (a,b,c;0,0,0)
    [View matrix form]
Systematic absences for this Magnetic Space Group via

Magnetic Point Group: m'm'm (8.4.27)
    [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\|
Ho1	Ho	0.1814(3)	0.25000	0.1332(6)	4	m_x,0,m_z	6.98(5)	0.0	-3.39(4)	7.76

Atom	x	y	z	Symmetry constraints on M	M_x	M_z
1	0.18140	0.25000	0.13320	m_x,0,m_z	6.98000	-3.39000
2	0.68140	0.25000	0.36680	m_x,0,-m_z	6.98000	3.39000
3	0.81860	0.75000	0.86680	m_x,0,m_z	6.98000	-3.39000
4	0.31860	0.75000	0.63320	m_x,0,-m_z	6.98000	3.39000

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

Active Irreps:

label	dim. small irrep	dim. full irrep	action	number of modes
mGM3+	1	1	primary	2

Comments:

NPD
See also Isikawa et al, J. Appl. Phys. 55, 2031 (1984)
FM along a
At 13.5K a second magnetic transition takes place with direction b also becoming FM
Structures at other various temperatures in the same phase are also reported in the same reference.

Comments (symmetry):

1k magnetic structure
k-maximal magnetic symmetry
1-dim irrep as primary

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

HoNi (#0.480)