Research/Sitter/MAGNDATA / 1.685_NiCr2O4.mcif

⬇ Download .mcif  ·  Data (JSON)

Spin lattice of Ni1Cr2O4Spin lattice of Ni1Cr2O4

Ni1Cr2O4

MAGNDATA entry 1.685 · 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 ¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.
ordered ≤ 24 K (−249 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic groupCA 2 2 21 BNS 20.37
Point group2221′
Parent space groupI 41/a m d No. 141
Spinscollinear · net moment 0 μB per cell
Propagation[1 1 1] 1k
Cella 8.1661 · b 8.1794 · c 8.5623 Å · α 90° · β 90° · γ 90°
Transition24 K (−249 °C)
Measured at2 K
Magnetic ionsCr, Ni
Largest moment component1.2 μB
MethodNPD

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 CA 2 2 21 →
Atom sites · 5 sites · CSV
siteelementxyzmambmc|m| (μB)
Ni1_1Ni0.1250.1250.125
Ni1_2Ni0.8750.8750.875
Cr1Cr0.50.50.5001.21.2
O1_1O0.25720.2580.2681
O1_2O0.74280.7420.7319

Moment components are along the crystal axes a, b, c (μB), as magCIF writes them. Symmetry generates the rest of the cell from these sites.

Source

M. Reehuis et al. PHYSICAL REVIEW B? (2015) · doi:10.1103/PhysRevB.91.024407

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.685_NiCr2O4.mcif from MAGNDATA · entry page

sha256 of this copy: e701d054d592cc1d6859a3b5427fbb6cf1a4541f023e851ca0f9cd9c52ab8294
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.685_NiCr2O4.mcif.