Research/Sitter/MAGNDATA / 1.399_Pr2CuO4.mcif

Pr₂CuO₄

MAGNDATA entry 1.399 · 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.

Structure · 9 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 7.9134 · b 7.9134 · c 12.1993 Å · α 90° · β 90° · γ 90°
Measured at	20 K
Magnetic ions	Cu
Largest moment component	0.225 μ_B
Method	NSD and 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 · 4 sites · CSV

site	element	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Pr1	Pr	0	0.3515
Cu1	Cu	0	0	−0.225	0.225	0	0.3182
O1	O	0.25	0
O2	O	0.25	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

P. Allenspach et al. Z. Phys. B. Condensed Matter (1989) · doi:10.1007/BF01313661

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.399_Pr2CuO4.mcif from MAGNDATA · entry page

sha256 of this copy: 0dfc8275afc9091eade7bdbf9fce821d92fcf9e931fbe46a9c6b2025d4ad2c85
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.399_Pr2CuO4.mcif.