Research/Sitter/MAGNDATA / 0.467_TbPO4.mcif

TbPO₄

MAGNDATA entry 0.467 · 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 ≤ 2.3 K (−271 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 9 properties

Magnetic group	I 4₁′/a′ m′ d BNS 141.556
Parent space group	I 4₁/a m d No. 141
Spins	collinear · net moment 0 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 6.94 · b 6.94 · c 6.068 Å · α 90° · β 90° · γ 90°
Transition	2.28 K (−271 °C)
Magnetic ions	Tb
Largest moment component	1 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 I 4₁′/a′ m′ d →

Atom sites · 3 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Tb1	Tb	0.75	0.125	0	0	1	1
P1	P	0.25	0.375
O1	O	0.4238	0.2218

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

W. N�gele et al. Z. Physik B - Condensed Matter (1980) · doi:10.1007/BF01305829

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.467_TbPO4.mcif from MAGNDATA · entry page

sha256 of this copy: 7267c38a5ecefea9e93686de6cfbe316426a1103289da893cbe564b723d7dd55
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.467_TbPO4.mcif.