Research/Sitter/MAGNDATA / 1.666_TbCoGa5.mcif

Tb₁Co₁Ga₅

MAGNDATA entry 1.666 · 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 ≤ 36.2 K (−237 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	C_a m m a BNS 67.509
Point group	mmm1′
Parent space group	P 4/m m m No. 123
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 0 1/2] 1k
Cell	a 8.434 · b 4.217 · c 13.618 Å · α 90° · β 90° · γ 90°
Transition	36.2 K (−237 °C)
Measured at	12 K
Magnetic ions	Tb
Largest moment component	8.32 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_a m m a →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Tb1	Tb	0	0	0	0	0	8.32	8.32
Co1	Co	0	0	0.25
Ga1	Ga	0.25	0.5	0
Ga2_1	Ga	0	0.5	0.155
Ga2_2	Ga	0.25	0	0.155

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

R. Watanuki et al. J. Phys. Soc. Jpn. (2011) · doi:10.1143/JPSJS.80SA.SA083

Cite the original paper and MAGNDATA, not this mirror.

Mirror note

the text block opened at line 73 was never closed; added the ';'. Differs from the Bilbao original.

Original file

⬇ 1.666_TbCoGa5.mcif from MAGNDATA · entry page

sha256 of this copy: e10f46e174ad17344bd5af0af94c99c1cf3f4ba2ae6789d5d6e43234b8b5aefb
This copy was altered (see the mirror note above), so the original will hash differently.

Tb1Co1Ga5

Symmetry

Source

Mirror note

Original file

Tb₁Co₁Ga₅