Research/Sitter/MAGNDATA / 0.38_GaFeO3.mcif

GaFeO₃

MAGNDATA entry 0.38 · source

s-wave ferrimagnet

Opposite moments of different size leave a net magnetisation.

Spin group ¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 200 K (−73 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P n a′ 2₁′ BNS 33.147
Point group	m′m2′
Parent space group	P n a 2₁ No. 33
Spins	collinear · net moment 21.2 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 5.0672 · b 8.7193 · c 9.3684 Å · α 90° · β 90° · γ 90°
Transition	200 K (−73 °C)
Measured at	4 K
Magnetic ions	Fe, Ga
Largest moment component	4.7 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 n a′ 2₁′ →

Atom sites · 10 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Ga1	Ga	0.1781	0.15	0
Ga2	Ga	0.8106	0.1593	0.3073	−4.7	0	0	4.7
Fe3	Fe	0.1886	0.1538	0.5831	3.9	0	0	3.9
Fe4	Fe	0.6795	0.0346	0.7998	−4.5	0	0	4.5
O1	O	0.9716	0.3228	0.4262
O2	O	0.5142	0.4864	0.4311
O3	O	0.6541	0.9979	0.2022
O4	O	0.148	0.1593	0.1974
O5	O	0.8437	0.1695	0.6717
O6	O	0.5166	0.1736	0.9383

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

T. Arima et al. PHYSICAL REVIEW B (2004) · doi:10.1103/physrevb.70.064426

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.38_GaFeO3.mcif from MAGNDATA · entry page

sha256 of this copy: 310fee43c825e8f07a06350a4c267e482d77bf00e1688a682c4f35a71a0b4396
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.38_GaFeO3.mcif.