Research/Sitter/MAGNDATA / 1.53_Er2BaNiO5.mcif

Er₂BaNiO₅

MAGNDATA entry 1.53 · 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 ¹2/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

Structure · 10 properties

Magnetic group	C_c 2/c BNS 15.90
Point group	2/m1′
Parent space group	I m m m No. 71
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 0 1/2] 1k
Cell	a 7.5091 · b 5.7319 · c 22.543 Å · α 90° · β 90° · γ 90°
Measured at	1.5 K
Magnetic ions	Er, Ni
Largest moment component	7.23 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_c 2/c →

Atom sites · 5 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Er1	Er	0.25	0	0.1014	7.23	0	0.32	7.2371
Ba1	Ba	0.25	0.5	0
Ni1	Ni	0	0	0	−1.38	0	−0.18	1.3917
O1	O	0	0.2414	0.0741
O2	O	0	0.5	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

E. Garcia-Matres et al. Eur. Phys. J. B (2001) · doi:10.1007/s100510170022

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.53_Er2BaNiO5.mcif from MAGNDATA · entry page

sha256 of this copy: 8c20b8d93054480c0206c7f8423180cdca5cef861f0ccdc17ba6778e6cde837d
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.53_Er2BaNiO5.mcif.