Research/Sitter/MAGNDATA / 1.597_TbCuSb2.mcif

TbCuSb₂

MAGNDATA entry 1.597 · 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 ≤ 9 K (−264 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_a 2₁/m BNS 11.55
Parent space group	P 4/n m m No. 129
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 1/4 1/2] 1k
Cell	a 4.2525 · b 17.01 · c 19.7582 Å · α 90° · β 90° · γ 90°
Transition	9 K (−264 °C)
Measured at	6.4 K
Magnetic ions	Tb
Largest moment component	6.27 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 P_a 2₁/m →

Atom sites · 8 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Tb1_1	Tb	0.25	0.0625	0.3724	6.27	0	0	6.27
Tb1_2	Tb	0.25	0.3125	0.3724	−6.27	0	0	6.27
Cu1_1	Cu	0.75	0.0625	0
Cu1_2	Cu	0.75	0.3125	0
Sb1_1	Sb	0.75	0.0625	0.25
Sb1_2	Sb	0.75	0.3125	0.25
Sb2_1	Sb	0.25	0.0625	0.0823
Sb2_2	Sb	0.25	0.3125	0.0823

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

M. Kolenda et al. Journal of Alloys and Compounds (2001) · doi:10.1016/S0925-8388(01)01194-X

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.597_TbCuSb2.mcif from MAGNDATA · entry page

sha256 of this copy: a067993c185558812342868c8327422f669293825066ffbf0022a85c51006cf2
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.597_TbCuSb2.mcif.