Research/Sitter/MAGNDATA / 1.864_Ba2TbFeO5.mcif

Ba₂Tb₁Fe₁O₅

MAGNDATA entry 1.864 · source

noncoplanar magnet

Spins pointing in three dimensions, not confined to a plane.

ordered ≤ 14 K (−259 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_a 2₁/c BNS 14.80
Point group	2/m1′
Parent space group	P 2₁/n No. 14
Spins	noncoplanar · net moment 0 μ_B per cell
Propagation	[1/2 0 1/2] 1k
Cell	a 25.3043 · b 6.08178 · c 15.5904 Å · α 90° · β 92.4029° · γ 90°
Transition	14 K (−259 °C)
Measured at	1.6 K
Magnetic ions	Fe, Tb
Largest moment component	8.31 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_a 2₁/c →

Atom sites · 9 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ba1	Ba	0.0793	0.2611	0.0117
Ba2	Ba	0.0583	0.2547	0.2535
Tb	Tb	0.4356	0.2504	0.1129	8.31	0.13	−0.03	8.3123
Fe	Fe	0.4578	0.2342	0.3799	4.05	1.96	0.18	4.4962
O1	O	0.4385	0.2654	0.2625
O2	O	0.1575	0.2309	0.2119
O3	O	0.1134	0.06	0.3792
O4	O	0.2621	0.0495	0.1442
O5	O	0.2379	0.5437	0.136

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

V. Hardy et al. Phys. Rev. B (2025) · doi:10.1103/xdgh-1vr4

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.864_Ba2TbFeO5.mcif from MAGNDATA · entry page

sha256 of this copy: 9e4ba04dd854c79258cde2f434b6ec99dee80a508b22338a83f571db2975c44f
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.864_Ba2TbFeO5.mcif.

Ba2Tb1Fe1O5

Symmetry

Source

Original file

Ba₂Tb₁Fe₁O₅