Research/Sitter/MAGNDATA / 0.1073_Cr2CoAl.mcif

Cr₂CoAl

MAGNDATA entry 0.1073 · source

s-wave ferrimagnet

Opposite moments of different size leave a net magnetisation.

Spin group ¹4/¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 730 K (457 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	I 4 m′ 2′ BNS 119.319
Point group	42′m′
Parent space group	I 4 m 2 No. 119
Spins	collinear · net moment 0.082 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 4.051 · b 4.051 · c 5.665 Å · α 90° · β 90° · γ 90°
Transition	730 K (457 °C)
Measured at	100 K
Magnetic ions	Co, Cr
Largest moment component	0.664 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 4 m′ 2′ →

Atom sites · 4 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Cr1	Cr	0	0.5	0	0	0.362	0.362
Cr2	Cr	0.5	0.75	0	0	−0.664	0.664
Co1	Co	0	0	0	0	0.343	0.343
Al1	Al	0.5	0.25

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

Guru Dutt Gupt et al. J. Appl. Phys. (2023) · doi:10.1063/5.0158138

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.1073_Cr2CoAl.mcif from MAGNDATA · entry page

sha256 of this copy: 87376f2ffe265b31136b182943b5da18ec7544e0ed58e613b339098d7bf3fa29
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.1073_Cr2CoAl.mcif.