Research/Sitter/MAGNDATA / 1.21_DyCo2Si2.mcif

DyCo₂Si₂

MAGNDATA entry 1.21 · 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 ¹4/¹m¹m¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 21 K (−252 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_I 4/m n c BNS 128.410
Point group	4/mmm1′
Parent space group	I 4/m m m No. 139
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 1] 1k
Cell	a 3.872 · b 3.872 · c 9.669 Å · α 90° · β 90° · γ 90°
Transition	21 K (−252 °C)
Measured at	4.2 K
Magnetic ions	Dy
Largest moment component	9.5 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_I 4/m n c →

Atom sites · 3 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Co	Co	0.5	0.25
Dy	Dy	0	0	0	0	9.5	9.5
Si	Si	0	0.37

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

H. Pinto et al. Phys. Rev. B (1983) · doi:10.1103/physrevb.27.1861

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.21_DyCo2Si2.mcif from MAGNDATA · entry page

sha256 of this copy: 06cf756e5ba83e6e03416928c0bf00095be7cfacd3679dff79773a5f5e30c094
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.21_DyCo2Si2.mcif.