Research/Sitter/MAGNDATA / 0.195_Sr2Ir0.92Sn0.08O4.mcif

Sr₂Ir_0.92Sn_0.08O₄

MAGNDATA entry 0.195 · source

noncollinear ferrimagnet

Opposite moments of different size leave a net magnetisation.

ordered ≤ 195 K (−78 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	I b′ c′ a BNS 73.551
Parent space group	I 4₁/a c d No. 142
Spins	coplanar · net moment 0.4 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.4846 · b 5.4846 · c 25.7977 Å · α 90° · β 90° · γ 90°
Transition	195 K (−78 °C)
Measured at	5 K
Magnetic ions	Ir
Largest moment component	0.19 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 I b′ c′ a →

Atom sites · 8 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Sr1_1	Sr	0	0	0.1757
Sr1_2	Sr	0	0.5	0.4257
Ir1	Ir	0	0	0	0.05	0.19	0	0.1965
Sn1	Sn	0	0	0
O1	O	0.1981	0.1981	0.25
O2	O	0.3019	0.3019	0.25
O3_1	O	0	0	0.0797
O3_2	O	0	0.5	0.3297

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

A.F. May et al. Phys. Rev. Materials (2018) · doi:10.1103/PhysRevMaterials.2.094406

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.195_Sr2Ir0.92Sn0.08O4.mcif from MAGNDATA · entry page

sha256 of this copy: 6f141dcda8e85c68a8aa6a7274544fe12cf97a486eb6fc402ac2d7817da3a801
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.195_Sr2Ir0.92Sn0.08O4.mcif.