Research/Sitter/MAGNDATA / 0.1156_Eu2MnSi2O7.mcif

Eu₂MnSi₂O₇

MAGNDATA entry 0.1156 · source

noncollinear ferrimagnet

Opposite moments of different size leave a net magnetisation.

ordered ≤ 10.6 K (−263 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P 21 21′ 2′ BNS 18.19
Point group	2 2′ 2′
Parent space group	P 4 21 m No. 113
Spins	coplanar · net moment 18.96 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 8.1297 · b 8.135 · c 5.1519 Å · α 90° · β 90° · γ 90°
Transition	10.6 K (−263 °C)
Measured at	3 K
Magnetic ions	Eu, Mn
Largest moment component	7.23 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 21 21′ 2′ →

Atom sites · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Eu1	Eu	0.1672	0.6631	0.4935	7.23	1.14	0.12	7.3203
Mn1	Mn	0	0	0	−4.98	−0.2	0	4.984
Si1	Si	0.3627	0.8583	0.0638
O1	O	0.5	0	0.1636
O2	O	0.3473	0.8658	0.7505
O31	O	0.0739	0.1904	0.7859
O32	O	0.1996	0.9199	0.1973

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

Masahiro Kawamata et al. Phys. Rev. Lett. (2026) · doi:10.1103/5ftk-7qyg

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1156_Eu2MnSi2O7.mcif from MAGNDATA · entry page

sha256 of this copy: 40b254c53ab137d845a465960e08edc1583310e330cbc388f66e2545a9330ad6
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1156_Eu2MnSi2O7.mcif.