Research/Sitter/MAGNDATA / 1.262_NpRhGa5.mcif

NpRhGa₅

MAGNDATA entry 1.262 · 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 ≤ 33 K (−240 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C_c m c m BNS 63.466
Parent space group	P 4/m m m No. 123
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 1/2] 1k
Cell	a 4.291 · b 4.291 · c 13.666 Å · α 90° · β 90° · γ 90°
Transition	33 K (−240 °C)
Measured at	3 K
Magnetic ions	Np, Rh
Largest moment component	0.63 μ_B
Method	NSD

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 C_c m c m →

Atom sites · 4 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Rh1	Rh	0	0	0.25
Ga1	Ga	0.5	0.5	0
Ga2	Ga	0	0.5	0.1494
Np1	Np	0	0	0	0.63	−0.63	0	0.891

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

S. Jonen et al. PHYSICAL REVIEW B (2006) · doi:10.1103/PhysRevB.74.144412

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.262_NpRhGa5.mcif from MAGNDATA · entry page

sha256 of this copy: d257db52bd2c0d9f9ccf460cd4c32dc3ff3b04af47abf7e64f590a6fb2b8457a
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.262_NpRhGa5.mcif.