Research/Sitter/MAGNDATA / 0.745_Ho3Ga5O12.mcif

Ho₃Ga₅O₁₂

MAGNDATA entry 0.745 · source

noncoplanar magnet

Spins pointing in three dimensions, not confined to a plane.

ordered ≤ 0.2 K (−273 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	I a 3 d′ BNS 230.148
Point group	m3m′
Parent space group	I a 3 d No. 230
Spins	noncoplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 12.29 · b 12.29 · c 12.29 Å · α 90° · β 90° · γ 90°
Transition	0.15 K (−273 °C)
Measured at	0.045 K
Magnetic ions	Ho
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 a 3 d′ →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ho1	Ho	0.125	0	0.25	3.9	0	0	3.9
Ga1	Ga	0	0	0
Ga2	Ga	0.375	0	0.25
O1	O	−0.0274	0.0552	0.1502

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. Hammann et al. J. Physique (1977) · doi:10.1051/jphys:01977003805046300

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.745_Ho3Ga5O12.mcif from MAGNDATA · entry page

sha256 of this copy: 178402bc7a3b2a2512051a007946b7d83e7f4f056497c8b04641c59686ff6df5
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.745_Ho3Ga5O12.mcif.