Research/Sitter/MAGNDATA / 0.427_Sm2Ti2O7.mcif

Sm₂Ti₂O₇

MAGNDATA entry 0.427 · source

noncoplanar magnet

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

ordered ≤ 0.4 K (−273 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 9 properties

Magnetic group	F d 3 m′ BNS 227.131
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 10.2056 · b 10.2056 · c 10.2056 Å · α 90° · β 90° · γ 90°
Transition	0.35 K (−273 °C)
Magnetic ions	Sm
Largest moment component	0.2555 μ_B
Method	NSD

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)
Sm1	Sm	0.5	0.5	0.5	0.255	0.255	0.2555	0.442
Ti1	Ti	0	0	0
O1	O	0.327	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

C. Mauws et al. PHYSICAL REVIEW B (2018) · doi:10.1103/PhysRevB.98.100401

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.427_Sm2Ti2O7.mcif from MAGNDATA · entry page

sha256 of this copy: 5671f09f8a4a4fe2bd90cc0ebc61f8f7920fb2025eabd40705ee1ae56290d58a
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.427_Sm2Ti2O7.mcif.