Research/Sitter/MAGNDATA / 1.153_Mn3GaC.mcif

Mn₃GaC

MAGNDATA entry 1.153 · 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 ¹3̄¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 164 K (−109 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	R_I 3c BNS 167.108
Point group	3m1′
Parent space group	P m 3m No. 221
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 1/2] 1k
Cell	a 7.792 · b 7.792 · c 7.792 Å · α 90° · β 90° · γ 90°
Transition	164 K (−109 °C)
Measured at	4.2 K
Magnetic ions	Mn
Largest moment component	1.05 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_I 3c →

Atom sites · 3 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ga1	Ga	0	0	0
Mn1	Mn	0	0.25	0.25	1.05	1.05	1.05	1.8187
C1	C	0.25	0.25	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

D. Fruchart et al. Solid State Communications (1970) · doi:10.1016/0038-1098(70)90579-X

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.153_Mn3GaC.mcif from MAGNDATA · entry page

sha256 of this copy: fcbb5a71247cf1248e0b1b5ae0a60d47463f9cec5d5fae16549457514f733c7e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.153_Mn3GaC.mcif.