Research/Sitter/MAGNDATA / 0.220_Mn2SiO4.mcif

Mn₂SiO₄

MAGNDATA entry 0.220 · source

noncoplanar ferrimagnet

Opposite moments of different size leave a net magnetisation.

ordered ≤ 47.1 K (−226 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 9 properties

Magnetic group	P n′ m′ a BNS 62.446
Parent space group	P n m a No. 62
Spins	noncoplanar · net moment 7.08 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 10.598 · b 6.257 · c 4.901 Å · α 90° · β 90° · γ 90°
Transition	47.1 K (−226 °C)
Measured at	2 K
Magnetic ions	Mn
Largest moment component	4.54 μ_B

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 n′ m′ a →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0	0	0	2.85	2.5	0.65	3.8464
Mn2	Mn	0.28	0.25	0.987	4.54	0	1.12	4.6761
Si1	Si	0.098	0.25	0.433
O1	O	0.092	0.25	0.769
O2	O	0.455	0.25	0.209
O3	O	0.165	0.038	0.287

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

W. Lottermoser et al. Phys. Stat. Sol. (1988) · doi:10.1002/pssa.2211090226

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.220_Mn2SiO4.mcif from MAGNDATA · entry page

sha256 of this copy: 420bb01a66731cded81d815daab0d1fec06eebff278146e3662875fb26a0088f
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.220_Mn2SiO4.mcif.