Research/Sitter/MAGNDATA / 1.813_TbFe6Ge6.mcif

Tb₁Fe₆Ge₆

MAGNDATA entry 1.813 · 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.

Structure · 10 properties

Magnetic group	P_B n n a BNS 52.318
Point group	mmm1′
Parent space group	C m c m No. 63
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1 0 0] 1k
Cell	a 8.1293 · b 17.7319 · c 5.1188 Å · α 90° · β 90° · γ 90°
Measured at	293 K
Magnetic ions	Fe
Largest moment component	1.57 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_B n n a →

Atom sites · 11 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Tb1	Tb	0	0.122	0.25
Tb2	Tb	0	0.628	0.25
Ge1	Ge	0	0.961	0.25
Ge2	Ge	0	0.456	0.25
Ge3	Ge	0	0.792	0.25
Ge4	Ge	0	0.2973	0.25
Ge5	Ge	0.3475	0.1257	0.25
Ge6	Ge	0.8475	0.1243	0.25
Fe1	Fe	0.25	0.25	0	1.57	0	0	1.57
Fe2	Fe	0.2509	0	0	1.57	0	0	1.57
Fe3	Fe	0.7491	0.8767	0.25	−1.57	0	0	1.57

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. J. Magn. Magn. Mater. (1998) · doi:10.1016/S0304-8853(97)01012-3

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.813_TbFe6Ge6.mcif from MAGNDATA · entry page

sha256 of this copy: 883c532db067af9a321cc6b07ba3de04b30b0b70311133f2012994fa7cac6502
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.813_TbFe6Ge6.mcif.

Tb1Fe6Ge6

Symmetry

Source

Original file

Tb₁Fe₆Ge₆