Research/Sitter/MAGNDATA / 0.989_MnCr2O4.mcif

Mn₁Cr₂O₄

MAGNDATA entry 0.989 · source

s-wave ferrimagnet

Opposite moments of different size leave a net magnetisation.

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

ordered ≤ 41 K (−232 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	I m m′ a′ BNS 74.559
Point group	m′m′m
Parent space group	F d 3 m No. 227
Spins	collinear · net moment 4.978 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 8.4297 · b 8.4297 · c 8.4261 Å · α 90° · β 90° · γ 90°
Transition	41 K (−232 °C)
Measured at	30 K
Magnetic ions	Cr, Mn
Largest moment component	2.06 μ_B
Method	NPD at T = 30 K

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′ a′ →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Mn1	Mn	0.125	0.125	0.125	−2.06	2.06	0	2.9133
Cr1_1	Cr	0.5	0.5	0.5	0.9	−0.9	0	1.2728
Cr1_2	Cr	0.75	0	0.25	0.72	−0.72	0	1.0182
O1_1	O	0.7362	0.7362	0.7362
O1_2	O	0.5138	0.2362	0.0138

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. Pardo-Sainz et al. Physical Review B (2023) · doi:10.1103/PhysRevB.107.144401

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.989_MnCr2O4.mcif from MAGNDATA · entry page

sha256 of this copy: 0e4a951e89c85009bf0d761b50e5bd902dfa452a0c05a45d1792dfffd6707409
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.989_MnCr2O4.mcif.

Mn1Cr2O4

Symmetry

Source

Original file

Mn₁Cr₂O₄