Research/Sitter/MAGNDATA / 1.140_PrMgPb.mcif

PrMgPb

MAGNDATA entry 1.140 · 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 · 11 properties

Magnetic group	P_A 2/c BNS 13.73
Point group	2/m1′
Parent space group	I 4/m m m No. 139
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 1] 1k
Cell	a 4.514 · b 4.514 · c 16.272 Å · α 90° · β 90° · γ 90°
Transition	14 K (−259 °C)
Measured at	2 K
Magnetic ions	Pr
Largest moment component	1.53 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_A 2/c →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Pr1	Pr	0	0	0.335	1.53	0	0.95	1.8009
Mg1_1	Mg	0	0.5	0
Mg1_2	Mg	0.5	0	0
Pb1	Pb	0	0	0.134

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

Lemoine, P. et al. Journal of Magnetism and Magnetic Materials (2012) · doi:10.1016/j.jmmm.2012.03.037

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.140_PrMgPb.mcif from MAGNDATA · entry page

sha256 of this copy: cff47f2332a83e030a595c5fbc6cd3cdac784477138b798e287f5b380090d701
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.140_PrMgPb.mcif.