Research/Sitter/MAGNDATA / 1.289_CePd2Ge2.mcif

CePd₂Ge₂

MAGNDATA entry 1.289 · 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 ≤ 5.1 K (−268 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 10 properties

Magnetic group	C_A c c m BNS 66.500
Parent space group	I 4/m m m No. 139
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 1/2 0] 1k
Cell	a 8.68 · b 8.68 · c 10.7 Å · α 90° · β 90° · γ 90°
Transition	5.1 K (−268 °C)
Measured at	1.8 K
Magnetic ions	Ce
Largest moment component	0.92 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 C_A c c m →

Atom sites · 3 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ce1	Ce	0	0	0.92	0.92	0	1.3011
Pd1	Pd	0.25	0.25
Si1	Si	0	0.375

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

R. Feyerherm et al. Physica B (1998) · doi:10.1016/S0921-4526(97)00678-9

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.289_CePd2Ge2.mcif from MAGNDATA · entry page

sha256 of this copy: 721846f52402645474200d2c5c998920e97b57b63a8a25d11e948ab2599c0c7e
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.289_CePd2Ge2.mcif.