Research/Sitter/MAGNDATA / 0.1141_Ca3CoMnO6.mcif

Ca₃Co_1.04Mn_0.96O₆

MAGNDATA entry 0.1141 · source

altermagnet

No net magnetisation, yet the electron bands are spin-split: the up and down spin sublattices are related only by a rotation or mirror, never by a shift or inversion.

Spin group ¹3̄²m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 15 K (−258 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	R 3 c1 BNS 161.69
Point group	3m1
Parent space group	R 3 c No. 167
Spins	collinear · 3 nodal planes · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 9.1314 · b 9.1314 · c 10.5817 Å · α 90° · β 90° · γ 120°
Transition	15 K (−258 °C)
Measured at	1.4 K
Magnetic ions	Co, Mn
Largest moment component	1.93 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 R 3 c1 →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ca1	Ca	0.3621	0	0.25
Mn1	Mn	0	0	0	0	0	1.93	1.93
Co1	Co	0	0	0.25	0	0	0.66	0.66
O1_1	O	0.1779	0.0247	0.108
O1_2	O	0.0247	0.1779	0.392

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

Y. J. Choi et al. PHYSICAL REVIEW LETTERS (2008) · doi:10.1103/PhysRevLett.100.047601

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1141_Ca3CoMnO6.mcif from MAGNDATA · entry page

sha256 of this copy: 9ee2b21557f7dc90d35d8adaf71fd311d207de615c2e657e7c26dbdd6a9b726a
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1141_Ca3CoMnO6.mcif.

Ca3Co1.04Mn0.96O6

Symmetry

Source

Original file

Ca₃Co_1.04Mn_0.96O₆