Research/Sitter/MAGNDATA / 1.178_Cu1.07Mn0.93O2.mcif

Cu_1.07Mn_0.93O₂

MAGNDATA entry 1.178 · 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 ¹1̄ × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 52 K (−221 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P_S 1 BNS 2.7
Point group	11′
Parent space group	C 2/m No. 12
Spins	collinear · net moment 0 μ_B per cell
Propagation	[-1/2 1/2 0] 1k
Cell	a 11.0867 · b 5.764 · c 5.8955 Å · α 90° · β 104.2968° · γ 90°
Transition	52 K (−221 °C)
Magnetic ions	Mn
Largest moment component	1.8 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_S 1 →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Cu1	Cu	0	0.25	0.5
Mn1	Mn	0	0	0	1.8	0	1.4	1.9888
Cu2	Cu	0	0	0
O1	O	0.2035	0	0.1763

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.O. Garlea et al. PHYSICAL REVIEW B (2011) · doi:10.1103/PhysRevB.83.172407

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.178_Cu1.07Mn0.93O2.mcif from MAGNDATA · entry page

sha256 of this copy: ac5852984cd1828040da102cd60566cc34157c2e41372694efa49211c31a25b6
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.178_Cu1.07Mn0.93O2.mcif.