Research/Sitter/MAGNDATA / 1.0.45_Ba3CoSb2O9.mcif

Ba₃CoSb₂O₉

MAGNDATA entry 1.0.45 · source

noncollinear antiferromagnet

All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).

ordered ≤ 3.8 K (−269 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P 6 2 m BNS 189.221
Parent space group	P 6₃/m m c No. 194
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1/3 1/3 0] 1k
Cell	a 17.5239 · b 17.5239 · c 14.4283 Å · α 90° · β 90° · γ 120°
Transition	3.8 K (−269 °C)
Measured at	1.7 K
Magnetic ions	Co
Largest moment component	1 μ_B
Method	NSD unpolarized and polarized

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 6 2 m →

Atom sites · 17 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ba1_1	Ba	0	0	0.25
Ba1_2	Ba	0	0	0.75
Ba2_1	Ba	0.1111	0.2222	0.9112
Ba2_2	Ba	0.2222	0.1111	0.4112
Ba2_3	Ba	0.1111	0.8889	0.9112
Co1	Co	0	0	0	1	1	0	1
Sb1_1	Sb	0.1111	0.2222	0.1518
Sb1_2	Sb	0.2222	0.1111	0.6518
Sb1_3	Sb	0.1111	0.8889	0.1518
O1_1	O	0.1609	0.3219	0.25
O1_2	O	0.1609	0.8391	0.25
O1_3	O	0.8391	0.6781	0.75
O1_4	O	0.8391	0.1609	0.75
O2_1	O	0.0566	0.1131	0.4157
O2_2	O	0.0566	0.9434	0.4157
O2_3	O	0.9434	0.8869	0.9157
O2_4	O	0.9434	0.0566	0.9157

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

J. Ma et al. PHYSICAL REVIEW LETTERS (2016) · doi:10.1103/PhysRevLett.116.087201

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.0.45_Ba3CoSb2O9.mcif from MAGNDATA · entry page

sha256 of this copy: 5f67d93f397c1f705b0648cd1c969a62019da5d690d9b93d05fd4443f8445f0f
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.0.45_Ba3CoSb2O9.mcif.