Research/Sitter/MAGNDATA / 0.9_GdB4.mcif

GdB₄

MAGNDATA entry 0.9 · 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 ≤ 42 K (−231 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P 4/m′ b′ m′ BNS 127.395
Point group	4/m′m′m′
Parent space group	P 4/m b m No. 127
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 7.1316 · b 7.1316 · c 4.0505 Å · α 90° · β 90° · γ 90°
Transition	42 K (−231 °C)
Measured at	2.2 K
Magnetic ions	Gd
Largest moment component	5.05 μ_B
Method	spherical neutron polarimetry (SNP)

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 4/m′ b′ m′ →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Gd1	Gd	0.3175	0.8175	0	5.05	5.05	0	7.1418
B1	B	0	0	0.2029
B2	B	0.1759	0.038	0.5
B3	B	0.0867	0.5867	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

J.A. Blanco et al. PHYSICAL REVIEW B (2006) · doi:10.1103/PhysRevB.73.212411

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.9_GdB4.mcif from MAGNDATA · entry page

sha256 of this copy: 2d9086d2b06f3fbca68e0dc1e889c65c9cb7b0f828d5874e041d10aad8a1fe68
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.9_GdB4.mcif.