Research/Sitter/MAGNDATA / 0.570_Li0.5FeCr1.5O4.mcif

Li_0.5FeCr_1.5O₄

MAGNDATA entry 0.570 · source

s-wave ferrimagnet

Opposite moments of different size leave a net magnetisation.

Spin group ¹m¹3̄¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 417 K (144 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	I 4₁/a m′ d′ BNS 141.557
Parent space group	F d 3 m No. 227
Spins	collinear · net moment 8.8 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 8.2918 · b 8.2918 · c 8.2918 Å · α 90° · β 90° · γ 90°
Transition	417 K (144 °C)
Measured at	7 K
Magnetic ions	Fe
Largest moment component	3.9 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 I 4₁/a m′ d′ →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Fe1	Fe	0.125	0.125	0.125	0	0	−3.9	3.9
Li1	Li	0.125	0.125	0.125
Fe2	Fe	0.5	0.5	0.5	0	0	1.4	1.4
Li2	Li	0.5	0.5	0.5
Cr1	Cr	0.5	0.5	0.5
O1	O	0.2586	0.2586	0.2586

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

M. Ghanathe et al. J. Appl. Phys. (2019) · doi:10.1063/1.5064425

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.570_Li0.5FeCr1.5O4.mcif from MAGNDATA · entry page

sha256 of this copy: de437c758d08b440bfd7088391d2d2f8ac5d0239a045000ff5a46bcbbc79a3b5
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.570_Li0.5FeCr1.5O4.mcif.