Research/Sitter/MAGNDATA / 1.772_Pr2PdAl7Ge4.mcif

Pr₂Pd₁Al₇Ge₄

MAGNDATA entry 1.772 · 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 ≤ 6 K (−267 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_c 2₁ 2₁ 2₁ BNS 19.28
Point group	2221′
Parent space group	P 4 2₁ m No. 113
Spins	coplanar · net moment 0 μ_B per cell
Propagation	[0 0 1/2] 1k
Cell	a 6.0059 · b 6.0059 · c 30.4556 Å · α 90° · β 90° · γ 90°
Transition	6 K (−267 °C)
Measured at	3 K
Magnetic ions	Pr
Largest moment component	1.03 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 2₁ 2₁ 2₁ →

Atom sites · 10 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Pr1_1	Pr	0	0	0.3807	−1.03	−0.683	0	1.2359
Pr1_2	Pr	0	0	0.6193	−1.03	−0.683	0	1.2359
Pd1	Pd	0	0	0.25
Ge1	Ge	0	0.5	0.1476
Ge2	Ge	0	0.5	0.3455
Ge3	Ge	0.2798	0.7798	0.4571
Al1	Al	0.7429	0.2429	0.2952
Al2	Al	0.243	0.743	0.2054
Al3	Al	0	0.5	0.4289
Al4	Al	0.2015	0.7015	0.0372

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

F. Gao et al. PHYSICAL REVIEW B (2023) · doi:10.1103/PhysRevB.107.214435

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.772_Pr2PdAl7Ge4.mcif from MAGNDATA · entry page

sha256 of this copy: 82ee5ecd12053a9185a8251409548f369bf8efb395650673ba3536a378a17f83
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.772_Pr2PdAl7Ge4.mcif.

Pr2Pd1Al7Ge4

Symmetry

Source

Original file

Pr₂Pd₁Al₇Ge₄