Research/Sitter/MAGNDATA / 0.493_Ho(Co0.667Ga0.333)2.mcif

Ho(Co_0.667Ga_0.333)₂

MAGNDATA entry 0.493 · source

s-wave ferromagnet

All moments add up to a net magnetisation: an ordinary magnet. Spin splitting is the same in every direction (s-wave).

Spin group ¹6/¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 31 K (−242 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C 2′/c′ BNS 15.89
Parent space group	P 6₃/m m c No. 194
Spins	collinear · net moment 25.462 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.2027 · b 5.2027 · c 8.4248 Å · α 90° · β 90° · γ 120°
Transition	31 K (−242 °C)
Measured at	3.5 K
Magnetic ions	Ho
Largest moment component	4.6 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 C 2′/c′ →

Atom sites · 7 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ho1	Ho	0.3333	0.6667	0.0631	4.4	0	4.6	6.3655
Co1	Co	0	0	0
Ga1	Ga	0	0	0
Co2_1	Co	0.83	0.66	0.25
Co2_2	Co	0.34	0.17	0.25
Ga2_1	Ga	0.83	0.66	0.25
Ga2_2	Ga	0.34	0.17	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

F. Yuan et al. Journal of Solid State Chemistry (2018) · doi:10.1016/j.jssc.2017.09.019

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.493_Ho(Co0.667Ga0.333)2.mcif from MAGNDATA · entry page

sha256 of this copy: b6c0365ee31d74defb658712265ce756838f58e371984ccb4fe25968996a90a6
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.493_Ho(Co0.667Ga0.333)2.mcif.