No net magnetisation, yet the electron bands are spin-split: the up and down spin sublattices are related only by a rotation or mirror, never by a shift or inversion. d-wave: the splitting changes sign twice around the Fermi surface (2 nodal planes).
Spin group ²4/¹m²m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.
ordered ≤ 3.2 K (−270 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic group
I 41′ c d′ BNS 110.248
Point group
4′m′m
Parent space group
I 41 c d No. 110
Spins
collinear · 2 nodal planes · net moment 0 μB per cell
Propagation
[0 0 0] 1k
Cell
a 12.2448 · b 12.2448 · c 8.3592 Å · α 90° · β 90° · γ 90°
Transition
3.2 K (−270 °C)
Measured at
2 K
Magnetic ions
Ni
Largest moment component
0.9 μB
Method
The magnetic site is shared between Ni and Mg atoms, with a composition of Ni0.88 and Mg0.12. The magnetic moment is specified per Ni atom, rather than per site, which means that it reflects only the contribution from the nickel atoms present at the site.
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.
sha256 of this copy: 843998beadf3ba8fc83356856af35ca4eb91195a933239f0c9d35e0592596280 The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1035_PbNi1.76Mg0.24V2O8.mcif.
