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Spin lattice of Tb1Ni1Al1Spin lattice of Tb1Ni1Al1

Tb1Ni1Al1

MAGNDATA entry 2.99 · source
antiferromagnet
No net magnetisation, and up and down sublattices are related by a shift or by inversion, so the bands stay spin-degenerate: a conventional antiferromagnet.
Spin group ¹2/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.
ordered ≤ 23 K (−250 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic groupCa m BNS 8.36
Point groupm1′
Parent space groupP 6 2 m No. 189
Spinscollinear · net moment 0 μB per cell
Propagation[1/2 0 1/2] · [0 1/2 1/2] 2k
Cella 13.794 · b 13.794 · c 7.952 Å · α 90° · β 90° · γ 120°
Transition23 K (−250 °C)
Measured at2 K
Magnetic ionsTb
Largest moment component8.7 μB
MethodSee also Ehlers and Maletta, Z. Phys. B 99, 145-150 (1996)[DOI:10.1007/BF02769926]

Symmetry

Stereogram of the magnetic point group: each operation applied to one direction. Filled = upper hemisphere, ring = lower; red operations include time reversal. Lines are mirrors; polygons are 2/3/4/6-fold axes; the centre ring is inversion.

Every structure in Ca m →
Atom sites · 18 sites · CSV
siteelementxyzmambmc|m| (μB)
Tb1_1Tb0.272100.25008.78.7
Tb1_2Tb00.27210.25008.48.4
Tb1_3Tb0.72790.72790.25008.78.7
Tb1_4Tb0.27210.50.25008.78.7
Tb1_5Tb00.77210.2500−8.48.4
Tb1_6Tb0.72790.2280.25008.78.7
Al1_1Al0.11600
Al1_2Al00.1160
Al1_3Al0.8840.8840
Al1_4Al0.1160.50
Al1_5Al00.6160
Al1_6Al0.8840.3840
Ni1_1Ni000.25
Ni1_2Ni00.50.25
Ni2_1Ni0.16670.33330
Ni2_2Ni0.33330.16670
Ni2_3Ni0.16670.83330
Ni2_4Ni0.33330.66670

Moment components are along the crystal axes a, b, c (μB), as magCIF writes them. Symmetry generates the rest of the cell from these sites.

Source

A. Donni et al. J. Phys.: Condens. Matter (1996) · doi:10.1088/0953-8984/8/50/043

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 2.99_TbNiAl.mcif from MAGNDATA · entry page

sha256 of this copy: cde7de5f545d6b2f2e476e3fc257c837468d8d01daf3af8316af50395c52cc0b
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 2.99_TbNiAl.mcif.