Research/Sitter/MAGNDATA / 1.455_Mn6Ni16Si7.mcif

Mn₆Ni₁₆Si₇

MAGNDATA entry 1.455 · source

noncollinear antiferromagnet

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

ordered ≤ 50 K (−223 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_A 2₁/c BNS 14.83
Parent space group	F m 3 m No. 225
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 0 1] 1k
Cell	a 11.1198 · b 11.1198 · c 11.1198 Å · α 90° · β 90° · γ 90°
Transition	50 K (−223 °C)
Measured at	4 K
Magnetic ions	Mn
Largest moment component	4.68 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_A 2₁/c →

Atom sites · 12 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1_1	Mn	0.6969	0	0	−0.74	−4.68	0	4.7381
Mn1_2	Mn	0	0.6969	0	−0.74	4.68	0	4.7381
Mn1_3	Mn	0	0	0.6969	0	0.65	0	0.65
Ni1_1	Ni	0.3332	0.3332	0.3332
Ni1_2	Ni	0.6668	0.3332	0.6668
Ni2_1	Ni	0.1178	0.1178	0.1178
Ni2_2	Ni	0.8822	0.1178	0.8822
Si1	Si	0	0	0
Si2_1	Si	0	0.25	0.25
Si2_2	Si	0.25	0	0.25
Si2_3	Si	0.25	0.25	0
Si2_4	Si	0.75	0.25	0

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

S.J. Ahmed et al. Inorg. Chem. (2018) · doi:10.1021/acs.inorgchem.8b01964

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.455_Mn6Ni16Si7.mcif from MAGNDATA · entry page

sha256 of this copy: c39a79fa180dfa8c93103d0c018234b64512ae8dd74e06eb479b3210ad76ba7e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.455_Mn6Ni16Si7.mcif.