Research/Sitter/MAGNDATA / 1.0.24_ThMn2.mcif

ThMn₂

MAGNDATA entry 1.0.24 · 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 ≤ 115 K (−158 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P 6′2′m BNS 189.223
Parent space group	P 6₃/m m c No. 194
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1/3 1/3 0] 1k
Cell	a 16.455 · b 16.455 · c 8.896 Å · α 90° · β 90° · γ 120°
Transition	115 K (−158 °C)
Measured at	5 K
Magnetic ions	Mn, Th
Largest moment component	1.6 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 6′2′m →

Atom sites · 8 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Th1_1	Th	0.1111	0.2222	0.062
Th1_2	Th	0.2222	0.1111	0.562
Th1_3	Th	0.2222	0.4444	0.562
Mn1	Mn	0	0	0
Mn2_1	Mn	0.2777	0.5553	0.25	−1.6	0	0	1.6
Mn2_2	Mn	0.4447	0.7223	0.25	−1.6	0	0	1.6
Mn2_3	Mn	0.7223	0.4447	0.75	1.6	0	0	1.6
Mn2_4	Mn	0.5553	0.2777	0.75	1.6	0	0	1.6

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

J. Deportes et al. Journal of Magnetism and Magnetic Materials (1987) · doi:10.1016/0304-8853(87)90402-1

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.0.24_ThMn2.mcif from MAGNDATA · entry page

sha256 of this copy: 589e4eac5fef90ab106de622b11c9fd43eaa62c9d336b94ec13e6119a43ba273
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.0.24_ThMn2.mcif.