Research/Sitter/MAGNDATA / 0.46_CaBaCo4O7.mcif

CaBaCo₄O₇

MAGNDATA entry 0.46 · source

noncollinear ferrimagnet

Opposite moments of different size leave a net magnetisation.

ordered ≤ 70 K (−203 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P n a′ 2₁′ BNS 33.147
Point group	m′m2′
Parent space group	P b n 2₁ No. 33
Spins	coplanar · net moment 3.8 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 6.2613 · b 11.0399 · c 10.1642 Å · α 90° · β 90° · γ 90°
Transition	70 K (−203 °C)
Measured at	4 K
Magnetic ions	Co
Largest moment component	2.44 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 n a′ 2₁′ →

Atom sites · 13 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ca1	Ca	0.0066	0.6729	0.8708
Ba1	Ba	0.0043	0.6651	0.5
Co1	Co	0.0155	0	0.9332	−1.78	−2.2	0	2.8299
Co2	Co	−0.0067	0.1688	0.6902	1.01	1.77	0	2.0379
Co3	Co	0.2527	0.0955	0.1904	0.72	1.92	0	2.0506
Co4	Co	0.2673	0.9209	0.6841	−0.05	−2.44	0	2.4405
O1	O	−0.0155	0.0044	0.246
O2	O	−0.0045	0.4914	0.2285
O3	O	0.7817	0.2613	0.7815
O4	O	0.7319	0.7418	0.2141
O5	O	0.9451	0.1522	0.4997
O6	O	0.2035	0.1097	0.0062
O7	O	0.2645	0.9471	0.5002

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

V. Caignaert et al. PHYSICAL REVIEW B · doi:10.1103/physrevb.81.094417

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.46_CaBaCo4O7.mcif from MAGNDATA · entry page

sha256 of this copy: 1e2a89d6535cef26688df23493ac717d62bc1f75da9e975307ec5df3761e99d3
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.46_CaBaCo4O7.mcif.