Research/Sitter/MAGNDATA / 1.158_YMn3Al4O12.mcif

YMn₃Al₄O₁₂

MAGNDATA entry 1.158 · 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 ¹m¹3̄ × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 35 K (−238 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_I n n m BNS 58.404
Point group	mmm1′
Parent space group	I m 3 No. 204
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1 1 1] 1k
Cell	a 7.1797 · b 7.1797 · c 7.1797 Å · α 90° · β 90° · γ 90°
Transition	35 K (−238 °C)
Measured at	5 K
Magnetic ions	Mn
Largest moment component	2.92 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_I n n m →

Atom sites · 8 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Y1	Y	0	0	0
Mn1_1	Mn	0	0.5	0.5	0	0	−2.92	2.92
Mn1_2	Mn	0.5	0	0.5	0	0	−2.92	2.92
Mn1_3	Mn	0.5	0.5	0	0	0	−2.92	2.92
Al1	Al	0.25	0.25	0.25
O1_1	O	0	0.1808	0.3022
O1_2	O	0.3022	0	0.1808
O1_3	O	0.1808	0.3022	0

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

M. Toyoda et al. PHYSICAL REVIEW B (2015) · doi:10.1103/PhysRevB.92.014420

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.158_YMn3Al4O12.mcif from MAGNDATA · entry page

sha256 of this copy: 4e43721bf9f8d4b23336d0fa31840c715fea23adf18fbabade1f7a72f3e59200
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.158_YMn3Al4O12.mcif.