Research/Sitter/MAGNDATA / 0.411_Tb5Ge4.mcif

Tb₅Ge₄

MAGNDATA entry 0.411 · source

noncoplanar magnet

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

ordered ≤ 91 K (−182 °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 62.444
Parent space group	P n m a No. 62
Spins	noncoplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 7.6303 · b 14.6809 · c 7.6934 Å · α 90° · β 90° · γ 90°
Transition	91 K (−182 °C)
Measured at	2 K
Magnetic ions	Tb
Largest moment component	8.3 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 n m′ a →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Tb1	Tb	0.2864	0.25	0	1.49	0	8.3	8.4327
Tb2	Tb	0.967	0.1016	0.8236	2.7	1.5	7.06	7.7061
Tb3	Tb	0.1161	0.1155	0.3357	4.1	1.8	7.49	8.7264
Ge1	Ge	0.9101	0.25	0.1123
Ge2	Ge	0.1672	0.25	0.6355
Ge3	Ge	0.2235	0.956	0.5265

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

C. Ritter et al. PHYSICAL REVIEW B (2002) · doi:10.1103/PhysRevB.65.094405

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.411_Tb5Ge4.mcif from MAGNDATA · entry page

sha256 of this copy: f205b5282fa6aad60c5721902e05771047f2e6a1538bc09f5925e98f414dd07d
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.411_Tb5Ge4.mcif.