Research/Sitter/MAGNDATA / 1.1.88_Bi0.8La0.2Fe0.5Sc0.5O3.mcif

Bi_0.8La_0.2Fe_0.5Sc_0.5O₃

MAGNDATA entry 1.1.88 · source

incommensurate

Incommensurate: the magnetic pattern's repeat length isn't a whole number of crystal cells, so it never lines up with the lattice.

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

Structure · 11 properties

Magnetic group	Im′ma′(00γ)s00
Point group	m′m′m
Parent space group	I m m a No. 74
Repeats every	1.87 cells along c (not a whole number: that's what incommensurate means)
Propagation	[0 0 0.534] 1k
Cell	a 5.6828 · b 7.9533 · c 5.7129 Å · α 90° · β 90° · γ 90°
Transition	220 K (−53 °C)
Measured at	1.5 K
Magnetic ions	Fe
Largest moment component	3.84 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 Im′ma′(00γ)s00 →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Bi1	Bi	0	0.25	0.5097
La1	La	0	0.25	0.5097
Fe1	Fe	0	0	0	0	0	3.84	3.84
Sc1	Sc	0	0	0
O1	O	0.25	−0.0442	0.25
O2	O	0	0.25	0.0843

Incommensurate: the moments are modulated; the picture evaluates each atom's Fourier series at its own phase.

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

D.D. Khalyavin et al. PHYSICAL REVIEW B (2015) · doi:10.1103/PhysRevB.92.224428

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.1.88_Bi0.8La0.2Fe0.5Sc0.5O3.mcif from MAGNDATA · entry page

sha256 of this copy: 254fb1ff3db9fa40f6b58d9de5aec1e1d7a0311714faf3c6376f21a992cddaab
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.1.88_Bi0.8La0.2Fe0.5Sc0.5O3.mcif.