Research/Sitter/MAGNDATA / 0.1086_Ho2Os2O7.mcif

Ho₂Os₂O₇

MAGNDATA entry 0.1086 · source

noncoplanar ferrimagnet

Opposite moments of different size leave a net magnetisation.

Structure · 10 properties

Magnetic group	I 4₁/a m′ d′ BNS 141.557
Point group	4/mm′m′
Parent space group	F d 3 m No. 227
Spins	noncoplanar · net moment 74.88 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 10.2051 · b 10.2051 · c 10.2051 Å · α 90° · β 90° · γ 90°
Measured at	1.5 K
Magnetic ions	Ho
Largest moment component	4.68 μ_B
Method	Polarized neutron powder diffraction (PNPD)

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 I 4₁/a m′ d′ →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ho1	Ho	0	0	0	4.68	4.68	4.68	8.106
Os1	Os	0.5	0.5	0.5
O1_1	O	0.4143	0.125	0.125
O1_2	O	0.125	0.125	0.4143
O2	O	0.125	0.125	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

S. Calder et al. PHYSICAL REVIEW B (2024) · doi:10.1103/PhysRevB.109.054408

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1086_Ho2Os2O7.mcif from MAGNDATA · entry page

sha256 of this copy: 3c989e4ec2439fe1d367aa3acf656c6d26c78f986062aab80ffb7c8bb10c6c62
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1086_Ho2Os2O7.mcif.