Research/Sitter/MAGNDATA / 0.568_TbNi0.4Ge2.mcif

TbNi_0.4Ge₂

MAGNDATA entry 0.568 · source

antiferromagnet

No net magnetisation, and up and down sublattices are related by a shift or by inversion, so the bands stay spin-degenerate: a conventional antiferromagnet.

Spin group ¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 16 K (−257 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C m′ c m BNS 63.459
Parent space group	C m c m No. 63
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 4.0861 · b 16.1508 · c 3.9779 Å · α 90° · β 90° · γ 90°
Transition	16 K (−257 °C)
Measured at	9 K
Magnetic ions	Tb
Largest moment component	5.6 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 m′ c m →

Atom sites · 4 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ni1	Ni	0.3197	0.25
Tb1	Tb	0.1068	0.25	0	0	5.6	5.6
Ge1	Ge	0.4601	0.25
Ge2	Ge	0.7507	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

P. Schobinger-Papamantellos et al. Journal of AUoys and Compounds (1992) · doi:10.1016/0925-8388(92)90522-B

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.568_TbNi0.4Ge2.mcif from MAGNDATA · entry page

sha256 of this copy: efaf26f02e8fc266fc03d5a978480f8e4f81dbc678fbe05fb062391300520923
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.568_TbNi0.4Ge2.mcif.