Research/Sitter/MAGNDATA / 2.87_TbCoGa5.mcif

Tb₁Co₁Ga₅

MAGNDATA entry 2.87 · 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 ≤ 5.4 K (−268 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	I_b b a m BNS 72.547
Point group	mmm1′
Parent space group	P 4/m m m No. 123
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[1/2 0 1/2] · [0 1/2 1/2] 2k
Cell	a 8.434 · b 8.434 · c 13.618 Å · α 90° · β 90° · γ 90°
Transition	5.4 K (−268 °C)
Measured at	1.5 K
Magnetic ions	Tb
Largest moment component	1 μ_B
Method	NMR

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 I_b b a m →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Tb1	Tb	0	0	0	−0.5	0	−1	1.118
Co1	Co	0	0	0.25
Ga1	Ga	0.25	0.25	0
Ga2_1	Ga	0	0.25	0.155
Ga2_2	Ga	0.25	0	0.155
Ga2_3	Ga	0.25	0	0.845

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

Y. Tokunaga et al. PHYSICAL REVIEW B (2011) · doi:10.1103/PhysRevB.84.214403

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 2.87_TbCoGa5.mcif from MAGNDATA · entry page

sha256 of this copy: a68b3a450526c7e13ea9755b63ba13d6d86f803685dd9d24c2a1cc42928e2e92
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 2.87_TbCoGa5.mcif.

Tb1Co1Ga5

Symmetry

Source

Original file

Tb₁Co₁Ga₅