MAGNDATA arrow Collection of Magnetic Structures

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

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NpNiGa5 (#2.28)

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Magnetic structure with all atoms

Magnetic structure with only magnetic atoms

Reference: F. Honda, N. Metoki, K. Kaneko, S. Jonen, E. Yamamoto, D. Aoki, Y. Homma, Y. Haga, Y. Shiokawa and Y. Ōnuki, Physical Review B (2006) 74 144413.
DOI: 10.1103/physrevb.74.144413
Atomic positions from: Colineau et al., J. Phys.: Condens. Matter 19 (2007) 246202

Parent space group (paramagnetic phase): P4/mmm (#123)
Propagation vector(s):
k1 (0, 0, 0)
k2 (1/2, 1/2, 1/2)

Transition Temperature: 18 K
Experiment Temperature: 4 K

Lattice parameters of the magnetic unit cell:
8.47060 8.47060 13.57160 90.00 90.00 90.00
Transformation from parent structure: (2a,2b,2c;0,0,0)
    [View matrix form]

BNS Magnetic Space Group: Imm'a' (#74.559) (non-standard)
    [View symmetry operations]
Transformation to a standard setting: (c,-1/2a+1/2b,-1/2a-1/2b;0,1/4,1/4)
    [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:
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LabelAtom typexyzMultiplicitySymmetry constraints on MMxMyMz|M|

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

Active Irreps:                                           
Irrep decomposition via

labeldim. full irrepdim. small irrepdirectionactionnumber of modes
mGM3+ 1 1 primary 2
mA5+ 2 2 special primary 1

Comments (symmetry):

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