Research/Sitter/MAGNDATA / 1.703_YBaCo2O5.mcif

Y₁Ba₁Co₂O₅

MAGNDATA entry 1.703 · 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 ≤ 220 K (−53 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_a m n a BNS 53.330
Point group	mmm1′
Parent space group	P 4/m m m No. 123
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] · [0 1/2 0] 2k
Cell	a 7.8235 · b 7.7492 · c 7.4367 Å · α 90° · β 90° · γ 90°
Transition	220 K (−53 °C)
Measured at	25 K
Magnetic ions	Co
Largest moment component	4.2 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_a m n a →

Atom sites · 8 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ba1	Ba	0	0	0
Y1	Y	0	0	0.5
Co1	Co	0.25	0.25	0.271	0	2.7	0	2.7
Co2	Co	0.25	0.25	0.755	0	−4.2	0	4.2
O1	O	0.25	0.25	0.994
O2	O	0.25	0	0.683
O3	O	0.25	0	0.307
O4	O	0.9847	0.25	0.3105

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

T. Vogt et al. PHYSICAL REVIEW LETTERS (2000) · doi:10.1103/PhysRevLett.84.2969

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.703_YBaCo2O5.mcif from MAGNDATA · entry page

sha256 of this copy: 107072b7ac3cbada8a812392c5ec58afd2203a5ee62d08ab280e9bcff2c1bed2
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.703_YBaCo2O5.mcif.

Y1Ba1Co2O5

Symmetry

Source

Original file

Y₁Ba₁Co₂O₅