Research/Sitter/MAGNDATA / 1.481_LaSr3Fe3O9.mcif

LaSr₃Fe₃O₉

MAGNDATA entry 1.481 · 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 > 350 K (77 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_C b c m BNS 57.391
Parent space group	C m c m No. 63
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1 0 0] 1k
Cell	a 28.7559 · b 5.528 · c 5.4583 Å · α 90° · β 90° · γ 90°
Transition	>350 K (77 °C)
Measured at	8 K
Magnetic ions	Fe
Largest moment component	3.99 μ_B
Method	Combined NPD and XPD

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 b c m →

Atom sites · 11 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1	Fe	0.3935	0.9983	0.25	0	0	−3.99	3.99
Fe2	Fe	0.75	0.4392	0.25	0	0	−3.58	3.58
La1	La	0.9518	0.002	0.25
Sr1	Sr	0.9518	0.002	0.25
La2	La	0.8285	0.9899	0.25
Sr2	Sr	0.8285	0.9899	0.25
O1	O	0.6087	0.75	0
O2	O	0.386	0.75	0
O3	O	0.4628	0.9748	0.25
O4	O	0.3086	0.0439	0.25
O5	O	0.75	0.108	0.359

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

Ø.S. Fjellvåg et al. Journal of Solid State Chemistry (2019) · doi:10.1016/j.jssc.2019.03.050

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.481_LaSr3Fe3O9.mcif from MAGNDATA · entry page

sha256 of this copy: 2ea235c5feb9996ddce00909f06335e6b6fb9f1db8cf66dd59d6366222f2b972
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.481_LaSr3Fe3O9.mcif.