Research/Sitter/MAGNDATA / 1.647_Na2.4Ni2TeO6.mcif

Na_2.4Ni₂TeO₆

MAGNDATA entry 1.647 · 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 ≤ 25 K (−248 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_A n m a BNS 62.453
Point group	mmm1′
Parent space group	P 6₃/m c m No. 193
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1/2 0 0] 1k
Cell	a 10.44116 · b 5.22058 · c 11.1216 Å · α 90° · β 90° · γ 120°
Transition	25 K (−248 °C)
Measured at	4 K
Magnetic ions	Ni
Largest moment component	1.3 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 P_A n m a →

Atom sites · 8 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Te1	Te	0	0	0
Ni1	Ni	0.1667	0.6667	0	0	0.7	1.3	1.4765
O1_1	O	0.1636	0	0.5959
O1_2	O	0	0.3271	0.5959
Na1_1	Na	0.1747	0	0.25
Na1_2	Na	0	0.3495	0.25
Na2	Na	0.1667	0.6667	0.25
Na3	Na	0	0	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

A. M. Samarakoon et al. Phys. Rev. B (2021) · doi:10.1103/PhysRevB.104.184415

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.647_Na2.4Ni2TeO6.mcif from MAGNDATA · entry page

sha256 of this copy: 1cab5b54257c8eb5c6ed7fe1e58ef036e43c5bcb561fbff95526dc5e5a7f3f0b
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.647_Na2.4Ni2TeO6.mcif.