Research/Sitter/MAGNDATA / 1.11_Bi4Fe5O13F.mcif

Bi₄Fe₅O₁₃F

MAGNDATA entry 1.11 · 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 ≤ 178 K (−95 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_C 4₂/n BNS 86.73
Point group	4/m1′
Parent space group	P 4₂/m b c No. 135
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] 1k
Cell	a 11.7192 · b 11.7192 · c 18.0501 Å · α 90° · β 90° · γ 90°
Transition	178 K (−95 °C)
Measured at	1.5 K
Magnetic ions	Fe
Largest moment component	4.05 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_C 4₂/n →

Atom sites · 18 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1_1	Fe	0.25	0.25	0.0801	4.05	−0.35	0	4.0651
Fe1_2	Fe	0.25	0.25	0.4199	4.05	−0.35	0	4.0651
Fe2_1	Fe	0.0063	0.8448	0	2.18	−2.53	0	3.3397
Fe2_2	Fe	0.0063	−0.3448	0.5	2.53	−2.18	0	3.3397
Fe3	Fe	0.25	0.25	0.25	4.05	0.35	0	4.0651
Bi11	Bi	0.005	0.6644	0.1572
Bi13	Bi	0.005	0.8356	0.3428
O11	O	0	0	0
O13	O	0	0.5	0.5
O21	O	0.7077	0.5841	0.5864
O23	O	0.7077	0.9159	0.9136
F11	F	0	0	0.2584
F13	F	0	0.5	0.2584
O31	O	0.7722	0.3627	0
O33	O	0.7722	0.1373	0.5
O41	O	0.7437	0.5762	0.75
O51	O	0.8607	0.7207	0.3332
O53	O	0.8607	0.7793	0.1668

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

A.M. Abakumov et al. PHYSICAL REVIEW B (2013) · doi:10.1103/physrevb.87.024423

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.11_Bi4Fe5O13F.mcif from MAGNDATA · entry page

sha256 of this copy: 5137dcd488db1990052303c292bc20d22fe3124b162e69d829d8c8ada9776b41
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.11_Bi4Fe5O13F.mcif.