Research/Sitter/MAGNDATA / 1.189_TbMg3.mcif

TbMg₃

MAGNDATA entry 1.189 · 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 ¹3̄¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 26 K (−247 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	R_I 3c BNS 167.108
Point group	3m1′
Parent space group	F m 3m No. 225
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 1/2] 1k
Cell	a 14.592 · b 14.592 · c 14.592 Å · α 90° · β 90° · γ 90°
Transition	26 K (−247 °C)
Measured at	4.2 K
Magnetic ions	Tb
Largest moment component	5.54 μ_B
Method	NPD

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 R_I 3c →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Tb1	Tb	0	0	0	5.54	5.54	5.54	9.5956
Mg1	Mg	0.25	0.25	0.25
Mg2	Mg	0.125	0.125	0.125

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

Source

G. Will et al. J. Mag. Mag. Mat. (1977) · doi:10.1016/0304-8853(77)90095-6

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.189_TbMg3.mcif from MAGNDATA · entry page

sha256 of this copy: 9912ae9e52ae358c69e79b04f81a8832793a93432d5f9332f29428cdc03d161c
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.189_TbMg3.mcif.