Research/Sitter/MAGNDATA / 1.570_La3OsO7.mcif

La₃OsO₇

MAGNDATA entry 1.570 · 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 ≤ 45 K (−228 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_a 2₁/m BNS 11.55
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 22.3932 · b 14.983 · c 7.6198 Å · α 90° · β 90° · γ 90°
Transition	45 K (−228 °C)
Measured at	5 K
Magnetic ions	Os
Largest moment component	1.58 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 · 9 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
La1	La	0	0.25	0
La2_1	La	0.1387	0.156	0.25
La2_2	La	0.8613	0.156	0.25
Os1	Os	0	0	0	1.58	0.64	0	1.7047
O1	O	0	0.462	0.25
O2_1	O	0.0619	0.091	0.0403
O2_2	O	0.9381	0.091	0.4597
O3_1	O	0.1848	0.0158	0.25
O3_2	O	0.8152	0.0158	0.25

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

R. Morrow et al. PHYSICAL REVIEW B (2015) · doi:10.1103/PhysRevB.92.134402

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.570_La3OsO7.mcif from MAGNDATA · entry page

sha256 of this copy: ea59f9d076d10b5ac2586c2d73340ef6a50f155e09112f466dd168e0de746ef8
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.570_La3OsO7.mcif.