Research/Sitter/MAGNDATA / 0.555_Ho0.05Bi0.95FeO3.mcif

Ho_0.05Bi_0.95FeO₃

MAGNDATA entry 0.555 · source

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.

Spin group ¹3̄²m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

Structure · 9 properties

Magnetic group	R 3c BNS 161.69
Parent space group	R 3 c No. 161
Spins	collinear · 3 nodal planes · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.5609 · b 5.5609 · c 13.807 Å · α 90° · β 90° · γ 120°
Measured at	6 K
Magnetic ions	Fe
Largest moment component	4.1 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 R 3c →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Bi1	Bi	0	0	0.2209
Ho1	Ho	0	0	0.2209
Fe1	Fe	0	0	0	0	0	4.1	4.1
O1	O	0.8888	0.6466	0.4354

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

J. Singh et al. AIP Advances (2019) · doi:10.1063/1.5082386

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.555_Ho0.05Bi0.95FeO3.mcif from MAGNDATA · entry page

sha256 of this copy: bba6bb42396cb7f729d3fede178bea4d99a7b4c2a42324b4da2661c62c9fe355
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.555_Ho0.05Bi0.95FeO3.mcif.