Research/Sitter/MAGNDATA / 1.897_Ho2RhSi3.mcif

Ho₂RhSi₃

MAGNDATA entry 1.897 · 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 ≤ 5.2 K (−268 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_A m c 2₁ BNS 26.74
Point group	mm21′
Parent space group	P 63/m m c No. 194
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 0 0] 1k
Cell	a 16.248 · b 8.124 · c 7.761 Å · α 90° · β 90° · γ 120°
Transition	5.2 K (−268 °C)
Measured at	1.5 K
Magnetic ions	Ho
Largest moment component	9.18 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 m c 2₁ →

Atom sites · 12 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ho1_1	Ho	0	0	0.25	0	0	9.18	9.18
Ho1_2	Ho	0	0	0.75	0	0	9.18	9.18
Ho2_1	Ho	0.2515	0.006	0.25	0	0	9.18	9.18
Ho2_2	Ho	0.497	0.497	0.25	0	0	9.18	9.18
Ho2_3	Ho	0.2485	0.503	0.75	0	0	9.18	9.18
Ho2_4	Ho	0.003	0.503	0.75	0	0	9.18	9.18
Rh1_1	Rh	0.1667	0.6667	0.108
Rh1_2	Rh	0.3333	0.3333	0.608
Si1_1	Si	0.083	0.332	0.006
Si1_2	Si	0.417	0.166	0.506
Si1_3	Si	0.334	0.834	0.006
Si1_4	Si	0.166	0.166	0.506

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

W. Bazela et al. J. Alloys Compd. (2003) · doi:10.1016/S0925-8388(03)00374-8

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.897_Ho2RhSi3.mcif from MAGNDATA · entry page

sha256 of this copy: 52fef4b76f73b683706ef1698c5cd5c036cb0153b380bf88206280fd1d5dab49
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.897_Ho2RhSi3.mcif.