Research/Sitter/MAGNDATA / 0.328_KMnF4.mcif

KMnF₄

MAGNDATA entry 0.328 · 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 ≤ 5.2 K (−268 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P 2₁′/c′ BNS 14.79
Parent space group	P 2₁/a No. 14
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 7.683 · b 7.629 · c 5.7444 Å · α 90° · β 90.4° · γ 90°
Transition	5.2 K (−268 °C)
Measured at	1.5 K
Magnetic ions	Mn
Largest moment component	2.55 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 2₁′/c′ →

Atom sites · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0	0	0	2.55	0.42	1.18	2.8336
Mn2	Mn	0.5	0	0	−2.55	−0.42	−1.18	2.8336
F1	F	0.0018	0.2353	0.1201
F2	F	0.2625	0.0209	0.9031
F3	F	0.0562	0.9242	0.2892
F4	F	0.9353	0.5653	0.2888
K1	K	0.7465	0.305	0.487

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.C. Moron et al. J. Phys.:Condens. Matter (1993) · doi:10.1088/0953-8984/5/28/007

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.328_KMnF4.mcif from MAGNDATA · entry page

sha256 of this copy: 89155902ba5e9cb8161dabacb78d655d68aff88d0ca8d679a09f732f60bb383c
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.328_KMnF4.mcif.