Research/Sitter/MAGNDATA / 0.81_U2Pd2Sn.mcif

U₂Pd₂Sn

MAGNDATA entry 0.81 · source

noncollinear antiferromagnet

All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).

ordered ≤ 41 K (−232 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P 4′/m′ b m′ BNS 127.394
Point group	4′/m′m′m
Parent space group	P 4/m b m No. 127
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 7.595 · b 7.595 · c 3.799 Å · α 90° · β 90° · γ 90°
Transition	41 K (−232 °C)
Measured at	10 K
Magnetic ions	U
Largest moment component	1.34 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 4′/m′ b m′ →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sn1	Sn	0	0	0
Pd1	Pd	0.633	0.133	0
U1	U	0.172	0.672	0.5	1.34	1.34	0	1.895

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

A. Purwanto et al. PHYSICAL REVIEW B (1994) · doi:10.1103/PhysRevB.50.6792

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.81_U2Pd2Sn.mcif from MAGNDATA · entry page

sha256 of this copy: 5490ef1a42aa345d108246a975a0a5503dd62fba46698678c27319c87d9d7301
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.81_U2Pd2Sn.mcif.