Research/Sitter/MAGNDATA / 0.497_LaMn2Si2.mcif

LaMn₂Si₂

MAGNDATA entry 0.497 · source

noncollinear ferrimagnet

Opposite moments of different size leave a net magnetisation.

ordered ≤ 310 K (37 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	I m′ m 2′ BNS 44.231
Parent space group	I 4/m m m No. 139
Spins	coplanar · net moment 6.728 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 4.0985 · b 4.0985 · c 10.5633 Å · α 90° · β 90° · γ 90°
Transition	310 K (37 °C)
Measured at	10 K
Magnetic ions	Mn
Largest moment component	1.993 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 I m′ m 2′ →

Atom sites · 3 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
La1	La	0	0
Mn1	Mn	0.5	0.25	−1.993	0	1.682	2.6079
Si1	Si	0	0.3801

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

M. Hofmann et al. Materials Science Forum (1996) · doi:10.4028/www.scientific.net/MSF.228-231.587

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.497_LaMn2Si2.mcif from MAGNDATA · entry page

sha256 of this copy: e8afc592e61b5e8a9dcc332b99594da69fd845c973800e2a2f74d267c8d04b0e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.497_LaMn2Si2.mcif.