Research/Sitter/MAGNDATA / 1.187_TbRh2Si2.mcif

TbRh₂Si₂

MAGNDATA entry 1.187 · 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 ¹4/¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 92 K (−181 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_I 4/m n c BNS 128.410
Point group	4/mmm1′
Parent space group	I 4/m m m No. 139
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 1] 1k
Cell	a 4.031 · b 4.031 · c 9.96 Å · α 90° · β 90° · γ 90°
Transition	92 K (−181 °C)
Measured at	15 K
Magnetic ions	Tb
Largest moment component	8.5 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_I 4/m n c →

Atom sites · 3 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Rh1	Rh	0.5	0.25
Si1	Si	0	0.375
Tb1	Tb	0	0	0	0	8.5	8.5

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

S. Quezel et al. Solid State Communications (1984) · doi:10.1016/0038-1098(84)90221-7

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.187_TbRh2Si2.mcif from MAGNDATA · entry page

sha256 of this copy: 5f728ac3d1a675f23503247ca7959b724386dc3720200caa5a68686a7c55467e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.187_TbRh2Si2.mcif.