Research/Sitter/MAGNDATA / 1.14_Ho2BaNiO5.mcif

Ho₂BaNiO₅

MAGNDATA entry 1.14 · source

noncollinear antiferromagnet

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

ordered ≤ 53 K (−220 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C_c 2/c BNS 15.90
Point group	2/m1′
Parent space group	I m m m No. 71
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1/2 0 1/2] 1k
Cell	a 7.5091 · b 5.7319 · c 22.543 Å · α 90° · β 90° · γ 90°
Transition	53 K (−220 °C)
Measured at	1.5 K
Magnetic ions	Ho, Ni
Largest moment component	9.06 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_c 2/c →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ho1	Ho	0.25	0	0.1013	0.12	0	9.06	9.0608
Ba1	Ba	0.25	0.5	0
Ni1	Ni	0	0	0	0.58	0	−1.26	1.3871
O1	O	0	0.2414	0.0747
O2	O	0.25	0	0

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

E. Garcia-Matres et al. Solid State Communications (1993) · doi:10.1016/0038-1098(93)90306-8

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.14_Ho2BaNiO5.mcif from MAGNDATA · entry page

sha256 of this copy: 7ea68f7a8ce24f31bf061bcc399e3fa95eeeefeac38a62587e6a687d655aec8e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.14_Ho2BaNiO5.mcif.