Research/Sitter/MAGNDATA / 0.19_MnTiO3.mcif

MnTiO₃

MAGNDATA entry 0.19 · 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 ¹3̄ × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 63 K (−210 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	R 3′ BNS 148.19
Point group	3′
Parent space group	R 3 No. 148
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.1386 · b 5.1386 · c 14.2857 Å · α 90° · β 90° · γ 120°
Transition	63 K (−210 °C)
Measured at	4.2 K
Magnetic ions	Mn
Largest moment component	4.55 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 R 3′ →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0	0	0.3602	0	0	4.55	4.55
Ti1	Ti	0	0	0.1478
O1	O	0.32	0.0292	0.2426

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

G. Shirane et al. J. Phys. Soc. Japan (1959) · doi:10.1143/jpsj.14.1352

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.19_MnTiO3.mcif from MAGNDATA · entry page

sha256 of this copy: 511d9a01806766a35e921348cc7a8192aae7d959b3ddb7396fa08b1245c0895b
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.19_MnTiO3.mcif.