Research/Sitter/MAGNDATA / 0.705_HoMn6Sn6.mcif

HoMn₆Sn₆

MAGNDATA entry 0.705 · source

s-wave ferrimagnet

Opposite moments of different size leave a net magnetisation.

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

ordered ≤ 376 K (103 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C m m′ m′ BNS 65.486
Parent space group	P 6/m m m No. 191
Spins	collinear · net moment 8.4 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.505 · b 5.505 · c 8.991 Å · α 90° · β 90° · γ 120°
Transition	376 K (103 °C)
Measured at	250 K
Magnetic ions	Ho, Mn
Largest moment component	4.68 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 m m′ m′ →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ho1	Ho	0	0	0.5	4.68	0	0	4.68
Mn1_1	Mn	0.5	0	0.255	−2.18	0	0	2.18
Mn1_2	Mn	0	0.5	0.255	−2.18	0	0	2.18
Sn1	Sn	0.3333	0.6667	0
Sn2	Sn	0.3333	0.6667	0.5
Sn3	Sn	0	0	0.172

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

B. Chafik et al. Journal of the Less-Common Metals (1991) · doi:10.1016/0022-5088(91)90359-C

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.705_HoMn6Sn6.mcif from MAGNDATA · entry page

sha256 of this copy: e373c9dbc05db4806fce3eecdb04ed533d2736c2d0011c2c67bba91245ff965e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.705_HoMn6Sn6.mcif.