Research/Sitter/MAGNDATA / 1.890_La3Ni2O7.mcif

La₃Ni₂O₇

MAGNDATA entry 1.890 · 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 ¹2/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 149.5 K (−124 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_a 21/m BNS 11.55
Point group	2/m1′
Parent space group	C m c m No. 63
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] 1k
Cell	a 10.92 · b 5.39 · c 21.21 Å · α 90° · β 104.9° · γ 90°
Transition	149.5 K (−124 °C)
Measured at	1.5 K
Magnetic ions	Ni
Largest moment component	0.87 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_a 21/m →

Atom sites · 20 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
La1_1	La	0.3742	0.75	0.5
La1_2	La	0.3742	0.75	0
La2_1	La	0.7186	0.25	0.6802
La2_2	La	0.4616	0.75	0.6802
La2_3	La	0.2186	0.25	0.1802
La2_4	La	0.4616	0.75	0.1802
O1_1	O	0.6006	0.75	0.5
O1_2	O	0.1006	0.75	0
O2_1	O	0.2942	0	0.5885
O2_2	O	0.2942	0	0.0885
O3_1	O	0.5529	0.5	0.6057
O3_2	O	0.0529	0.5	0.1057
O4_1	O	0.746	0.75	0.7046
O4_2	O	0.4586	0.25	0.7046
O4_3	O	0.246	0.75	0.2046
O4_4	O	0.4586	0.25	0.2046
Ni1_1	Ni	0.925	0.25	0.597	0	0.87	0	0.87
Ni1_2	Ni	0.925	0.25	0.097	0	0.16	0	0.16
Ni1_3	Ni	0.327	0.25	0.403	0	0.16	0	0.16
Ni1_4	Ni	0.327	0.25	0.903	0	0.87	0	0.87

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

Igor Plokhikh et al. Phys. Rev. Research (2026) · doi:10.1103/rw8k-tng5

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.890_La3Ni2O7.mcif from MAGNDATA · entry page

sha256 of this copy: ead1d15c279721506585b54a9e999665e633f6dd50bcf05f1a0a81d9358f2c95
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.890_La3Ni2O7.mcif.