Research/Sitter/MAGNDATA / 0.22_DyB4.mcif

DyB₄

MAGNDATA entry 0.22 · 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 ≤ 21 K (−252 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P b′ a m BNS 55.355
Point group	m′mm
Parent space group	P 4/m b m No. 127
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 7.021 · b 7.021 · c 3.972 Å · α 90° · β 90° · γ 90°
Transition	21 K (−252 °C)
Measured at	4.2 K
Magnetic ions	Dy
Largest moment component	9.8 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′ a m →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Dy	Dy	0.319	0.819	0	0	0	9.8	9.8
B1	B	0	0	0.196
B2	B	0.086	0.586	0.5
B3	B	0.175	0.039	0.5
B3_1	B	0.961	0.175	0.5

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

G. Will et al. Journal of the Less-Common Metals (1979) · doi:10.1016/0022-5088(79)90071-7

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.22_DyB4.mcif from MAGNDATA · entry page

sha256 of this copy: 713e34e7427023c1b8a72112174757f498b5a91d7805d1236811e82de16277cc
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.22_DyB4.mcif.