Research/Sitter/MAGNDATA / 1.142_CeMgPb.mcif

CeMgPb

MAGNDATA entry 1.142 · 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 ¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 7 K (−266 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C_A m m a BNS 67.510
Point group	mmm1′
Parent space group	I 4/m m m No. 139
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] 1k
Cell	a 9.076 · b 9.076 · c 16.339 Å · α 90° · β 90° · γ 90°
Transition	7 K (−266 °C)
Measured at	2 K
Magnetic ions	Ce
Largest moment component	0.98 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 C_A m m a →

Atom sites · 3 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ce1	Ce	0	0.33	−0.98	0.98	0	1.3859
Mg1	Mg	0.25	0
Pb1	Pb	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

⬇ 1.142_CeMgPb.mcif from MAGNDATA · entry page

sha256 of this copy: 374f713c9498cb3b36baf9b9bb0285e0b29d4b882076bd42311b581df683b894
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.142_CeMgPb.mcif.