Research/Sitter/MAGNDATA / 0.892_NiCr2O4.mcif

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Spin lattice of Ni1Cr2O4Spin lattice of Ni1Cr2O4

Ni1Cr2O4

MAGNDATA entry 0.892 · source
s-wave compensated ferrimagnet
Opposite moments cancel, but the two sublattices aren't related by any symmetry, so the bands split like a ferromagnet's (s-wave).
Spin group ¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.
ordered ≤ 74 K (−199 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic groupF d′ d′ d BNS 70.530
Point groupm′m′m
Parent space groupI 41/a m d No. 141
Spinscollinear · net moment 0.08 μB per cell
Propagation[0 0 0] 1k
Cella 8.1661 · b 8.1794 · c 8.5623 Å · α 90° · β 90° · γ 90°
Transition74 K (−199 °C)
Measured at36 K
Magnetic ionsCr, Ni
Largest moment component1.69 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 F d′ d′ d →
Atom sites · 3 sites · CSV
siteelementxyzmambmc|m| (μB)
Ni1Ni0.1250.1250.125−1.69001.69
Cr1Cr0.50.50.50.84000.84
O1O0.25720.2580.2681

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

⬇ 0.892_NiCr2O4.mcif from MAGNDATA · entry page

sha256 of this copy: f600ac252acc57a63bf8c0e37e15ea70bc8cbe382072019240eb57da07bbbd6c
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.892_NiCr2O4.mcif.