Research/Sitter/MAGNDATA / 1.628_PrMnSi2.mcif

PrMnSi₂

MAGNDATA entry 1.628 · 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 ≤ 34 K (−239 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_B n n a BNS 52.318
Point group	mmm1′
Parent space group	C m c m No. 63
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1 0 0] 1k
Cell	a 4.094 · b 17.553 · c 4.028 Å · α 90° · β 90° · γ 90°
Transition	34 K (−239 °C)
Measured at	2 K
Magnetic ions	Mn, Pr
Largest moment component	2.35 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_B n n a →

Atom sites · 4 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Pr1	Pr	0.101	0.25	0	2.35	0	2.35
Mn1	Mn	0.75	0.25	0	2.04	0	2.04
Si1	Si	0.326	0.25
Si2	Si	0.465	0.25

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

B. Malaman et al. Journal of Magnetism and Magnetic Materials (1990) · doi:10.1016/0304-8853(90)90143-E

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.628_PrMnSi2.mcif from MAGNDATA · entry page

sha256 of this copy: a34c0037c141939eed87710bb51aa48a2bd70959f17a414b66f3818c43d5762c
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.628_PrMnSi2.mcif.