Research/Sitter/MAGNDATA / 1.634_YFe6Ge6.mcif

YFe₆Ge₆

MAGNDATA entry 1.634 · 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 ≤ 486 K (213 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 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 8.1245 · b 17.7051 · c 5.1261 Å · α 90° · β 90° · γ 90°
Transition	486 K (213 °C)
Measured at	295 K
Magnetic ions	Fe
Largest moment component	1.42 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 · 9 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Y1	Y	0	0	0
Fe1	Fe	0.25	0.25	0	1.42	0	0	1.42
Fe2	Fe	0.251	0	0	1.42	0	0	1.42
Fe3	Fe	0.251	0.125	0.25	1.42	0	0	1.42
Ge1	Ge	0	0.957	0.25
Ge2	Ge	0	0.457	0.25
Ge3	Ge	0	0.789	0.25
Ge4	Ge	0	0.289	0.25
Ge5	Ge	0.348	0.125	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

J. M. Cadogan et al. J. Phys.: Condens. Matter (1998) · doi:10.1088/0953-8984/10/24/015

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.634_YFe6Ge6.mcif from MAGNDATA · entry page

sha256 of this copy: 0b0583de32eb0746b61963f670554f15e3af993217575d8a61f0205c7ca42c6a
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.634_YFe6Ge6.mcif.