Research/Sitter/MAGNDATA / 1.448_HoSi.mcif

HoSi

MAGNDATA entry 1.448 · 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 ≤ 16.5 K (−257 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C_a 2/c BNS 15.91
Parent space group	C m c m No. 63
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 0 1/2] 1k
Cell	a 8.458 · b 10.426 · c 7.59 Å · α 90° · β 90° · γ 90°
Transition	16.5 K (−257 °C)
Measured at	2.7 K
Magnetic ions	Ho
Largest moment component	8.6 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 C_a 2/c →

Atom sites · 2 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ho1	Ho	0	0.138	0.125	0	0	8.6	8.6
Si1	Si	0	0.431	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

P. Schobinger-Papamantellos et al. Journal of Magnetism and Magnetic Materials (2011) · doi:10.1016/j.jmmm.2011.05.044

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.448_HoSi.mcif from MAGNDATA · entry page

sha256 of this copy: ce30c4ce750f7fd2d41ccca6fe0ba5816b486f06c6384a65ed3dd75c0f741e52
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.448_HoSi.mcif.