Research/Sitter/MAGNDATA / 1.533_TbC2.mcif

TbC₂

MAGNDATA entry 1.533 · source

p-wave magnet

Coplanar spins, no net moment, and a translation that reverses every spin: spin splitting that is odd in momentum (p-wave).

ordered ≤ 66 K (−207 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_c 2 2 2₁ BNS 17.12
Point group	2221′
Parent space group	I 4/m m m No. 139
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[3/4 0 0] 1k
Cell	a 14.712 · b 3.678 · c 6.206 Å · α 90° · β 90° · γ 90°
Transition	66 K (−207 °C)
Measured at	5 K
Magnetic ions	Tb
Largest moment component	7.1 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 P_c 2 2 2₁ →

Atom sites · 6 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Tb1_1	Tb	0.25	0	0	0	1.6	0	1.6
Tb1_2	Tb	0	0	0	0	0	7.1	7.1
Tb1_3	Tb	0.875	0.5	0.5	0	1.13	−5.02	5.1456
C1_1	C	0.25	0	0.604
C1_2	C	0	0	0.604
C1_3	C	0.875	0.5	0.104

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

M. Atoji et al. J. Chem. Phys. (1967) · doi:10.1063/1.1840950

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.533_TbC2.mcif from MAGNDATA · entry page

sha256 of this copy: fdcfc7e14d01e6e69adfa02475238692a903897dc448dbd6bd2b03b38883715c
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.533_TbC2.mcif.