Research/Sitter/MAGNDATA / 1.281_YBaCuFeO5.mcif

YBaCuFeO₅

MAGNDATA entry 1.281 · 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 ¹4/¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 446 K (173 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	F_S m m 2 BNS 42.223
Parent space group	P 4 m m No. 99
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 1/2] 1k
Cell	a 7.7414 · b 7.7414 · c 15.3422 Å · α 90° · β 90° · γ 90°
Transition	446 K (173 °C)
Measured at	300 K
Magnetic ions	Cu, Fe
Largest moment component	2.51 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 F_S m m 2 →

Atom sites · 9 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Y1	Y	0	0	0.2495
Ba1	Ba	0	0	0.003
Fe1	Fe	0.25	0.25	0.359	2.51	0	0	2.51
Cu1	Cu	0.25	0.25	0.131
O1	O	0.25	0.25	0.4775
O2_1	O	0.25	0	0.133
O2_2	O	0	0.25	0.133
O3_1	O	0.25	0	0.3185
O3_2	O	0	0.25	0.3185

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.W. Mombru et al. Inorg. Chem. (1994) · doi:10.1021/ic00085a008

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.281_YBaCuFeO5.mcif from MAGNDATA · entry page

sha256 of this copy: 60e933ca071949cd3e77942480949c80c5eca6058cdc936f51482b554a0deab0
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.281_YBaCuFeO5.mcif.