Research/Sitter/MAGNDATA / 1.391_Fe2MnBO5.mcif

Fe₂MnBO₅

MAGNDATA entry 1.391 · 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 ≤ 90 K (−183 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_b n m a BNS 62.451
Parent space group	P b a m No. 55
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 1/2] 1k
Cell	a 9.5223 · b 12.4283 · c 6.1828 Å · α 90° · β 90° · γ 90°
Transition	90 K (−183 °C)
Measured at	70 K
Magnetic ions	Fe
Largest moment component	2.5 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_b n m a →

Atom sites · 14 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1	Fe	0	0	0
Fe2	Fe	0	0.5	0.25	0	2.5	0	2.5
Fe3	Fe	0.0001	0.2753	0
Fe4	Fe	0.7411	0.3863	0.25	0	1.8	0	1.8
Mn1	Mn	0	0	0
Mn2	Mn	0	0.5	0.25
Mn3	Mn	0.0001	0.2753	0
Mn4	Mn	0.7411	0.3863	0.25
B1	B	0.271	0.361	0.25
O1	O	0.843	0.0432	0.25
O2	O	0.3852	0.0767	0
O3	O	0.6256	0.1386	0.25
O4	O	0.1135	0.141	0
O5	O	0.838	0.2361	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

F. Damay et al. PHYSICAL REVIEW B (2020) · doi:10.1103/PhysRevB.101.094418

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.391_Fe2MnBO5.mcif from MAGNDATA · entry page

sha256 of this copy: e53115b63b55e4ffd36a19f5d788b0a13850ede4a91e00a28e247a2feaa68cd7
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.391_Fe2MnBO5.mcif.