Research/Sitter/MAGNDATA / 1.891_La2PrNi2O7.mcif

La₂PrNi₂O₇

MAGNDATA entry 1.891 · 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 ≤ 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_c m m n BNS 59.413
Point group	mmm1′
Parent space group	C m c m No. 63
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 1/2 0] 1k
Cell	a 20.43435 · b 5.38206 · c 10.92416 Å · α 90° · β 90° · γ 90°
Transition	149.5 K (−124 °C)
Measured at	1.5 K
Magnetic ions	Ni
Largest moment component	0.85 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_c m m n →

Atom sites · 16 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
La1_1	La	0.25	0.75	0.4991
La1_2	La	0.25	0.25	0.7509
Pr1_1	Pr	0.25	0.75	0.4991
Pr1_2	Pr	0.25	0.25	0.7509
La2_1	La	0.0683	0.75	0.5041
La2_2	La	0.4317	0.25	0.7459
Pr2_1	Pr	0.0683	0.75	0.5041
Pr2_2	Pr	0.4317	0.25	0.7459
O1_1	O	0.75	0.75	0.5256
O1_2	O	0.75	0.25	0.7244
O2_1	O	0.9546	0.75	0.4788
O2_2	O	0.5454	0.25	0.7712
O3	O	0.8563	0.5	0.625
O4	O	0.8376	0	0.875
Ni1_1	Ni	0.847	0.25	0.749	0	0.85	0	0.85
Ni1_2	Ni	0.347	0.25	0.999	0	0.15	0	0.15

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

⬇ 1.891_La2PrNi2O7.mcif from MAGNDATA · entry page

sha256 of this copy: 8108050b184e6db2a7e27cc1b2ad3c0bfb7dfc00699e280a60cce38f933dd97c
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.891_La2PrNi2O7.mcif.