Research/Sitter/MAGNDATA / 1.150_PrAg.mcif

PrAg

MAGNDATA entry 1.150 · source

antiferromagnet

No net magnetisation, and up and down sublattices are related by a shift or by inversion, so the bands stay spin-degenerate: a conventional antiferromagnet.

Spin group ¹4/¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 14 K (−259 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_B m n a BNS 53.334
Point group	mmm1′
Parent space group	P m 3m No. 221
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] 1k
Cell	a 7.56 · b 7.56 · c 3.78 Å · α 90° · β 90° · γ 90°
Transition	14 K (−259 °C)
Magnetic ions	Pr
Largest moment component	1.5 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_B m n a →

Atom sites · 2 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ag1	Ag	0	0	0
Pr1	Pr	0.25	0.25	0.5	1.5	−1.5	0	2.1213

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

T.O. Brun et al. Phys. Rev. B (1974) · doi:10.1103/PhysRevB.9.248

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.150_PrAg.mcif from MAGNDATA · entry page

sha256 of this copy: a061a9b5a709601bef43bbca7a9d21865ef96c66dd99e7b0e7d712c30d7eeb3c
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.150_PrAg.mcif.