Research/Sitter/MAGNDATA / 0.1072_Fe2SiO4.mcif

Fe₂Si₁O₄

MAGNDATA entry 0.1072 · source

noncoplanar magnet

Spins pointing in three dimensions, not confined to a plane.

ordered ≤ 23 K (−250 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P n m a . 1 BNS 62.441
Point group	mmm
Parent space group	P n m a No. 62
Spins	noncoplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 4.81638 · b 10.44704 · c 6.08316 Å · α 90° · β 90° · γ 90°
Transition	23 K (−250 °C)
Measured at	10 K
Magnetic ions	Fe
Largest moment component	4.53 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 n m a . 1 →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1	Fe	0	0	0	2.46	1.37	3.39	4.4069
Fe2	Fe	0.9862	0.2801	0.25	0	0	4.53	4.53
Si1	Si	0.4313	0.0972	0.25
O1	O	0.7684	0.0919	0.25
O2	O	0.2089	0.4528	0.25
O3	O	0.2882	0.1658	0.4643

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

Evangelia K. Tripoliti et al. Mineralogical Magazine (2023) · doi:10.1180/mgm.2023.66

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1072_Fe2SiO4.mcif from MAGNDATA · entry page

sha256 of this copy: dce14de80cd48ebce2d6b82bb221a58c8685455eb28adef5a525faab36c6fed2
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1072_Fe2SiO4.mcif.

Fe2Si1O4

Symmetry

Source

Original file

Fe₂Si₁O₄