Research/Sitter/MAGNDATA / 0.439_Tb3NiGe2.mcif

Tb₃NiGe₂

MAGNDATA entry 0.439 · source

s-wave ferrimagnet

Opposite moments of different size leave a net magnetisation.

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

ordered ≤ 135 K (−138 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	P n′ m a′ BNS 62.448
Parent space group	P n m a No. 62
Spins	collinear · net moment 85.24 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 11.41 · b 4.1776 · c 11.229 Å · α 90° · β 90° · γ 90°
Transition	135 K (−138 °C)
Measured at	1.4 K
Magnetic ions	Ni, Tb
Largest moment component	7.37 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 n′ m a′ →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Tb1	Tb	0.3812	0.25	0.4417	0	7.37	0	7.37
Tb2	Tb	0.0541	0.25	0.375	0	7.37	0	7.37
Tb3	Tb	0.2176	0.25	0.6956	0	7.37	0	7.37
Ni1	Ni	0.125	0.25	0.125	0	−0.8	0	0.8
Ge1	Ge	0.481	0.25	0.69
Ge2	Ge	0.305	0.25	0.998

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. Morozkin et al. Journal of Magnetism and Magnetic Materials (2012) · doi:10.1016/j.jmmm.2012.04.023

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.439_Tb3NiGe2.mcif from MAGNDATA · entry page

sha256 of this copy: 53193891ed9212eb00131cd1d8bfe515d82e37fd1f38459389bd6f54d1c29c8a
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.439_Tb3NiGe2.mcif.