Research/Sitter/MAGNDATA / 0.758_CeFeO3.mcif

CeFeO₃

MAGNDATA entry 0.758 · 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 ²m¹m²m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 220 K (−53 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P n m a BNS 62.441
Point group	mmm
Parent space group	P b n m No. 62
Spins	collinear · 2 nodal planes · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.515 · b 5.5615 · c 7.8068 Å · α 90° · β 90° · γ 90°
Transition	220 K (−53 °C)
Measured at	200 K
Magnetic ions	Ce, 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 n m a →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ce1	Ce	0.4919	0.4618	0.75
Fe1	Fe	0.5	0	0	0	4.05	0	4.05
O1	O	0.5807	0.0187	0.75
O2	O	0.7122	0.2893	0.0426

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. Ritter et al. J. Phys.: Condens. Matter (2021) · doi:10.1088/1361-648X/abe64a

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.758_CeFeO3.mcif from MAGNDATA · entry page

sha256 of this copy: ca802380c6830674b1a791c0fde8ff6934dee2083bcf0945c0e41fdc85d6a471
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.758_CeFeO3.mcif.