Research/Sitter/MAGNDATA / 1.141_NdMgPb.mcif

NdMgPb

MAGNDATA entry 1.141 · 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 ≤ 26 K (−247 °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 4.5 · b 4.5 · c 16.217 Å · α 90° · β 90° · γ 90°
Transition	26 K (−247 °C)
Measured at	2 K
Magnetic ions	Pr
Largest moment component	2.83 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)
Nd1	Pr	0	0	0.335	2.83	0	1.84	3.3756
Mg1_1	Mg	0	0.5	0
Mg1_2	Mg	0.5	0	0
Pb1	Pb	0	0	0.135

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

⬇ 1.141_NdMgPb.mcif from MAGNDATA · entry page

sha256 of this copy: bb6c72577d75ccca423b64467d2f37e41dc3722c33c1318510abc93d24d53c17
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.141_NdMgPb.mcif.