Research/Sitter/MAGNDATA / 0.85_KCo4(PO4)3.mcif

KCo₄(PO₄)₃

MAGNDATA entry 0.85 · source

noncollinear ferrimagnet

Opposite moments of different size leave a net magnetisation.

ordered ≤ 20 K (−253 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P n n′ m′ BNS 58.398
Point group	m′m′m
Parent space group	P n n m No. 58
Spins	coplanar · net moment 26.08 μ_B per cell
Propagation	[0 0 0] 1k
Cell	a 9.629 · b 16.4818 · c 6.1664 Å · α 90° · β 90° · γ 90°
Transition	20 K (−253 °C)
Measured at	2 K
Magnetic ions	Co
Largest moment component	2.94 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 n′ m′ →

Atom sites · 16 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
K1	K	0.2976	0.464	0
Co1	Co	0.5314	0.0941	0	−2.16	0.1	0	2.1623
Co2	Co	0.9729	0.1408	0	2.8	−1.51	0	3.1812
Co3	Co	0.2439	0.2528	0.2	2.94	1.11	0	3.1426
P1	P	0.0427	0.3358	0
P2	P	0.4534	0.2804	0
P3	P	0.2087	0.0368	0
O1	O	0.8811	0.3218	0
O2	O	0.6134	0.276	0
O3	O	0.5907	0.1208	0.2983
O4	O	0.3906	0.194	0
O5	O	0.11	0.2465	0
O6	O	0.8616	0.044	0
O7	O	0.166	0.0889	0.1987
O8	O	0.9002	0.179	0.7068
O9	O	0.3668	0.0207	0

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

M. Lopez et al. Chem. Eur. J. (2008) · doi:10.1002/chem.200800763

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.85_KCo4(PO4)3.mcif from MAGNDATA · entry page

sha256 of this copy: 7a6cbb9b427e841d95e4bc3c24f2f5c66c0b077f565706a1a6bb37298b6573bb
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.85_KCo4(PO4)3.mcif.