Research/Sitter/MAGNDATA / 0.954_Nd2Ir2O7.mcif

Nd₂Ir₂O₇

MAGNDATA entry 0.954 · source

noncoplanar magnet

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

ordered ≤ 30 K (−243 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	F d 3 m′ BNS 227.131
Point group	m3m′
Parent space group	F d 3 m No. 227
Spins	noncoplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 10.3683 · b 10.3683 · c 10.3683 Å · α 90° · β 90° · γ 90°
Transition	30 K (−243 °C)
Measured at	1.8 K
Magnetic ions	Ir, Nd
Largest moment component	0.733 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 F d 3 m′ →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Nd1	Nd	0.5	0.5	0.5	0.733	0.733	0.733	1.2696
Ir1	Ir	0	0	0	0.195	0.195	0.195	0.3377
O1	O	0.3315	0.125	0.125
O2	O	0.375	0.375	0.375

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. Guo et al. PHYSICAL REVIEW B (2016) · doi:10.1103/PhysRevB.94.161102

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.954_Nd2Ir2O7.mcif from MAGNDATA · entry page

sha256 of this copy: 4fa2f81804cda602a4fa3ddada75dfaae491a89b0a46411aa38b7cf328140352
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.954_Nd2Ir2O7.mcif.