Research/Sitter/MAGNDATA / 0.778_LaMnSi2.mcif

LaMnSi₂

MAGNDATA entry 0.778 · source

s-wave ferromagnet

All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).

Spin group ¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 386 K (113 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C m′ c m′ BNS 63.464
Point group	m′m′m
Parent space group	C m c m No. 63
Spins	collinear · net moment 8.28 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 4.191 · b 17.68 · c 4.073 Å · α 90° · β 90° · γ 90°
Transition	386 K (113 °C)
Measured at	2 K
Magnetic ions	Mn
Largest moment component	2.07 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 C m′ c m′ →

Atom sites · 4 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
La1	La	0.101	0.25
Mn1	Mn	0.751	0.25	0	2.07	0	2.07
Si1	Si	0.324	0.25
Si2	Si	0.465	0.25

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

B. Malaman et al. Journal of Magnetism and Magnetic Materials (1990) · doi:10.1016/0304-8853(90)90143-E

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.778_LaMnSi2.mcif from MAGNDATA · entry page

sha256 of this copy: f7114da6e6f9d4618dfb82b94629f05d39a8aee128f715814af4984feb824272
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.778_LaMnSi2.mcif.