Research/Sitter/MAGNDATA / 0.652_HoMnO3.mcif

HoMnO₃

MAGNDATA entry 0.652 · source

noncoplanar magnet

Spins pointing in three dimensions, not confined to a plane.

ordered ≤ 33 K (−240 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P 6₃′ c m′ BNS 185.200
Point group	6′mm′
Parent space group	P 6₃ c m No. 185
Spins	noncoplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 6.136 · b 6.136 · c 11.399 Å · α 90° · β 90° · γ 120°
Transition	33 K (−240 °C)
Measured at	2 K
Magnetic ions	Ho, Mn
Largest moment component	4.2 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 P 6₃′ c m′ →

Atom sites · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ho1	Ho	0	0	0.276	0	0	4.2	4.2
Ho2	Ho	0.3333	0.6667	0.234	0	0	−1.3	1.3
Mn1	Mn	0.344	0	0	3.01	0	0	3.01
O1	O	0.314	0	0.161
O2	O	0.643	0	0.339
O3	O	0	0	0.481
O4	O	0.3333	0.6667	0.015

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. Prakash et al. J. Phys.: Condens. Matter (2021) · doi:10.1088/1361-648X/abde66

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.652_HoMnO3.mcif from MAGNDATA · entry page

sha256 of this copy: a2672e0a1873425253a3e0dba669e66630a05b546ebf8d723d3a8e77be6203c3
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.652_HoMnO3.mcif.