Research/Sitter/MAGNDATA / 0.944_Yb2Ir2O7.mcif

Yb₂Ir₂O₇

MAGNDATA entry 0.944 · source

noncoplanar ferrimagnet

Opposite moments of different size leave a net magnetisation.

ordered ≤ 2 K (−271 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	R 3 m′ BNS 166.101
Point group	3m′
Parent space group	F d 3 m No. 227
Spins	noncoplanar · net moment 9.145 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 10.104 · b 10.104 · c 10.104 Å · α 90° · β 90° · γ 90°
Transition	2 K (−271 °C)
Measured at	0.04 K
Magnetic ions	Ir, Yb
Largest moment component	0.33 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 R 3 m′ →

Atom sites · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Yb1_1	Yb	0.5	0.5	0.5	0.33	0.33	0.33	0.5716
Yb1_2	Yb	0.25	0.75	0	0.33	0.33	0.33	0.5716
Ir1_1	Ir	0	0	0	0.254	0.254	0.254	0.4399
Ir1_2	Ir	0.75	0.25	0.5	−0.254	−0.254	0.254	0.4399
O1	O	0.375	0.375	0.375
O2_1	O	0.34	0.125	0.125
O2_2	O	0.41	0.125	0.625

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

H. Jacobsen et al. PHYSICAL REVIEW B (2020) · doi:10.1103/PhysRevB.101.104404

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.944_Yb2Ir2O7.mcif from MAGNDATA · entry page

sha256 of this copy: 9809d23db53b6a07e7b6ebd593673a6ff8c18cbf3ae926ac9ebad457efe83263
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.944_Yb2Ir2O7.mcif.