Research/Sitter/MAGNDATA / 0.139_BiCrO3.mcif

BiCrO₃

MAGNDATA entry 0.139 · source

s-wave compensated ferrimagnet

Opposite moments cancel, but the two sublattices aren't related by any symmetry, so the bands split like a ferromagnet's (s-wave).

Spin group ¹2/¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 80 K (−193 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P 1 BNS 2.4
Point group	1
Parent space group	C 2/c No. 15
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 9.4519 · b 5.4741 · c 9.5767 Å · α 90° · β 108.55° · γ 90°
Transition	80 K (−193 °C)
Measured at	2 K
Magnetic ions	Cr
Largest moment component	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 1 →

Atom sites · 11 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Bi1_1	Bi	0.1334	0.2158	0.1313
Bi1_2	Bi	0.8666	0.2158	0.3687
Cr1_1	Cr	0.25	0.25	0.5	0	1.7	2	2.6249
Cr1_2	Cr	0.75	0.25	0	0	1.7	2	2.6249
Cr2	Cr	0	0.765	0.25	0	−1.7	−2	2.6249
O1_1	O	0.0873	0.202	0.587
O1_2	O	0.9127	0.202	0.913
O2_1	O	0.1557	0.523	0.3649
O2_2	O	0.8443	0.523	0.1351
O3_1	O	0.3575	0.522	0.1596
O3_2	O	0.6425	0.522	0.3404

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

C. Darie et al. Solid State Sciences (2010) · doi:10.1016/j.solidstatesciences.2008.12.004

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.139_BiCrO3.mcif from MAGNDATA · entry page

sha256 of this copy: 44f6ba5bd425ebda79265fd163f1a45f5be88c869b4f845a4f757f299a7fedfd
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.139_BiCrO3.mcif.