Research/Sitter/MAGNDATA / 0.373_La0.75Bi0.25Fe0.5Cr0.5O3.mcif

Spin lattice of La0.75Bi0.25Fe0.5Cr0.5O3

La_0.75Bi_0.25Fe_0.5Cr_0.5O₃

MAGNDATA entry 0.373 · source

d-wave 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. d-wave: the splitting changes sign twice around the Fermi surface (2 nodal planes).

Spin group ¹m²m²m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 350 K (77 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P n m a BNS 62.441
Parent space group	P n m a No. 62
Spins	collinear · 2 nodal planes · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.5164 · b 7.7907 · c 5.5209 Å · α 90° · β 90° · γ 90°
Transition	350 K (77 °C)
Measured at	4 K
Magnetic ions	Fe
Largest moment component	3.3 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 m a →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
La1	La	0.9733	0.25	0.0069
Bi1	Bi	0.9733	0.25	0.0069
Fe1	Fe	0	0	0.5	3.3	0	0	3.3
Cr1	Cr	0	0	0.5
O1	O	0.5133	0.25	0.918
O2	O	0.7159	0.035	0.2803

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

S. Ivanov et al. Journal of Solid State Chemistry (2017) · doi:10.1016/j.jssc.2017.06.031

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.373_La0.75Bi0.25Fe0.5Cr0.5O3.mcif from MAGNDATA · entry page

sha256 of this copy: 275bdd03fcd216ee1367f17261c07dd2950c1c596f3bc975892b2eb7442e860f
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.373_La0.75Bi0.25Fe0.5Cr0.5O3.mcif.