Research/Sitter/MAGNDATA / 1.358_HoGe1.5.mcif

HoGe_1.5

MAGNDATA entry 1.358 · 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 ¹6/¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 10 K (−263 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C_c m c m BNS 63.466
Parent space group	P 6/m m m No. 191
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 1/2] 1k
Cell	a 3.8952 · b 3.8952 · c 8.184 Å · α 90° · β 90° · γ 120°
Transition	10 K (−263 °C)
Measured at	1.4 K
Magnetic ions	Ho
Largest moment component	6.2 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_c m c m →

Atom sites · 2 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ho1	Ho	0	0	0	6.2	0	0	6.2
Ge1	Ge	0.3333	0.6667	0.25

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

O. Zaharko et al. J. Phys.: Condens. Matter (1998) · doi:10.1088/0953-8984/10/29/015

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.358_HoGe1.5.mcif from MAGNDATA · entry page

sha256 of this copy: cdf0725372975cb185e76906ffee8f364d2c792809d9d18be46ebfeabdef83a0
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.358_HoGe1.5.mcif.