Research/Sitter/MAGNDATA / 1.20_HoMnO3.mcif

HoMnO₃

MAGNDATA entry 1.20 · 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 ≤ 29 K (−244 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_b m n 2₁ BNS 31.129
Point group	mm21′
Parent space group	P n m a No. 62
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 0 0] 1k
Cell	a 11.6708 · b 7.3606 · c 5.2572 Å · α 90° · β 90° · γ 90°
Transition	29 K (−244 °C)
Measured at	24.8 K
Magnetic ions	Mn
Largest moment component	3.87 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 m n 2₁ →

Atom sites · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ho	Ho	0.042	0.25	0.9825
Ho_1	Ho	0.958	0.75	0.0175
Mn	Mn	0	0	0.5	3.87	0	0	3.87
O1	O	0.2311	0.25	0.1113
O1_1	O	0.7689	0.75	0.8887
O2	O	0.1641	0.0534	0.7013
O2_1	O	0.8359	0.5534	0.2987

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

A. Munoz et al. Inorg. Chem. (2001) · doi:10.1021/ic0011009

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.20_HoMnO3.mcif from MAGNDATA · entry page

sha256 of this copy: 603bcc38515ef7c279837b061ea27f2af52bc3ad52076b45fd1f9e45d8a56968
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.20_HoMnO3.mcif.