Research/Sitter/MAGNDATA / 1.575_ErRh.mcif

ErRh

MAGNDATA entry 1.575 · 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 ≤ 3.3 K (−270 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_a m m a BNS 51.298
Parent space group	P m 3 m No. 221
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 1/2] 1k
Cell	a 3.361 · b 3.361 · c 6.722 Å · α 90° · β 90° · γ 90°
Transition	3.3 K (−270 °C)
Measured at	1.2 K
Magnetic ions	Er
Largest moment component	6.1 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 m a →

Atom sites · 2 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Er1	Er	0	0	0	6.1	0	0	6.1
Rh1	Rh	0.5	0.5	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

R. Chamard-Bois et al. Solid State Communications (1972) · doi:10.1016/0038-1098(72)90586-8

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.575_ErRh.mcif from MAGNDATA · entry page

sha256 of this copy: 447417919412d77cd97705bbbaa3cb29f76d1a2bce433d5929ab5703baf763c6
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.575_ErRh.mcif.