Research/Sitter/MAGNDATA / 2.30_CeRh2Si2.mcif

CeRh₂Si₂

MAGNDATA entry 2.30 · 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 ¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 27 K (−246 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_B c c a BNS 54.350
Parent space group	I 4/m m m No. 139
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] · [1/2 1/2 1/2] 2k
Cell	a 8.1656 · b 8.1656 · c 20.341 Å · α 90° · β 90° · γ 90°
Transition	27 K (−246 °C)
Measured at	10 K
Magnetic ions	Ce
Largest moment component	2.39 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_B c c a →

Atom sites · 9 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ce1_1	Ce	0	0	0	0	0	2.39	2.39
Ce1_2	Ce	0	0	0.5	0	0	0.16	0.16
Rh1_1	Rh	0	0.25	0.125
Rh1_2	Rh	0.25	0	0.375
Rh1_3	Rh	0	0.25	0.625
Si1_1	Si	0	0	0.1868
Si1_2	Si	0	0	0.8132
Si1_3	Si	0	0	0.6868
Si1_4	Si	0	0	0.3131

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

B. H. Grier et al. PHYSICAL REVIEW 8 (1984) · doi:10.1103/PhysRevB.29.2664

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 2.30_CeRh2Si2.mcif from MAGNDATA · entry page

sha256 of this copy: f5fe9c852571fb48d441d1f02ff70fbed66e2c68828d026f698c02442b06ef3c
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 2.30_CeRh2Si2.mcif.