Research/Sitter/MAGNDATA / 1.217_Tb2BaNiO5.mcif

Tb₂BaNiO₅

MAGNDATA entry 1.217 · 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 ≤ 65 K (−208 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C_c2/c BNS 15.90
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 7.566 · b 5.8 · c 22.814 Å · α 90° · β 90° · γ 90°
Transition	65 K (−208 °C)
Measured at	1.5 K
Magnetic ions	Ni, Tb
Largest moment component	8 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_c2/c →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ni1	Ni	0	0	0	−1.5	0	−1.35	2.018
Ba1	Ba	0.25	0.5	0
Tb1	Tb	0.25	0	0.1014	0.68	0	8	8.0288
O1	O	0	0.761	0.4125
O2	O	0	0.5	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

E. Garcia-Matres et al. Eur. Phys. J. B (2001) · doi:10.1007/s100510170022

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.217_Tb2BaNiO5.mcif from MAGNDATA · entry page

sha256 of this copy: 584c14c69ca97434364ced852229d647c2985dab108942e7ac6a99a92865f624
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.217_Tb2BaNiO5.mcif.