Research/Sitter/MAGNDATA / 1.884_K4Ni5Te3O16.mcif

K₄Ni₅Te₃O₁₆

MAGNDATA entry 1.884 · source

noncoplanar magnet

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

ordered ≤ 30 K (−243 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	F_S m m 2 BNS 42.223
Point group	m m 21′
Parent space group	P m m 2 No. 25
Spins	noncoplanar · net moment 0 μ_B per cell
Propagation	[1/2 1/2 1/2] 1k
Cell	a 24.1372 · b 25.2364 · c 10.4546 Å · α 90° · β 90° · γ 90°
Transition	30 K (−243 °C)
Measured at	20 K
Magnetic ions	Ni
Largest moment component	2.71 μ_B
Method	NPD. Nuclear and magnetic Rietveld refinements were carried out using the FullProf Suite; symmetry-allowed magnetic structures were analyzed using the Bilbao Crystallographic Server.

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 F_S m m 2 →

Atom sites · 22 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Te1	Te	0.25	0.3755	0.0738
Te2	Te	0.0655	0.3769	0.3231
Ni1	Ni	0	0.3749	0.0755	0	2.71	0.2	2.7174
Ni2	Ni	0.1258	0.377	0.0769	−1.38	1.82	−0.44	2.326
Ni3	Ni	0.3111	0.3751	0.325	0.3	0.07	−0.36	0.4738
K1	K	0.1313	0	0.1715
K2	K	0	0	0.069
K3	K	0	0.25	0.408
K4	K	0.25	0.25	0.373
K5	K	0.185	0	0.322
K6	K	0.1338	0.25	0.0875
K7	K	0.181	0	0.4855
O1	O	0	0.4173	0.398
O2	O	0.1208	0.42	0.4005
O3	O	0.25	0.418	0.4125
O4	O	0.3095	0.4169	0.1505
O5	O	0.25	0.3333	0.2225
O6	O	0.0617	0.3361	0.473
O7	O	0.1917	0.3347	0.4895
O8	O	0.12	0.3342	0.2395
O9	O	0.0617	0.4173	0.162
O10	O	0	0.3356	0.2475

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

Xianghan Xu et al. Chem. Mater. (2026) · doi:10.1021/acs.chemmater.6c00997

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.884_K4Ni5Te3O16.mcif from MAGNDATA · entry page

sha256 of this copy: a8965cd61da216e93e7aef9dbf36af71598b121b2e79ecf1012c7ee2ed53df6e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.884_K4Ni5Te3O16.mcif.