Research/Sitter/MAGNDATA / 0.844_SrNi2Fe16O27.mcif

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Spin lattice of Sr1Ni2Fe16O27Spin lattice of Sr1Ni2Fe16O27

Sr1Ni2Fe16O27

MAGNDATA entry 0.844 · source
s-wave ferrimagnet
Opposite moments of different size leave a net magnetisation.
Spin group ¹6/¹m¹m¹m: each symmetry marked ¹ keeps every spin, ² swaps up and down.
ordered ≤ 500 K (227 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.
Structure · 11 properties
Magnetic groupP 63/m m′ c′ BNS 194.270
Point group6/mm′m′
Parent space groupP 63/m m c No. 194
Spinscollinear · net moment 35 μB per cell
Propagation[0 0 0] 1k
Cella 5.8877 · b 5.8877 · c 32.7017 Å · α 90° · β 90° · γ 120°
Transition500 K (227 °C)
Measured at293 K
Magnetic ionsFe
Largest moment component5 μB
MethodNPD

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 63/m m′ c′ →
Atom sites · 21 sites · CSV
siteelementxyzmambmc|m| (μB)
Sr1Sr000.25
Fe7PRFe0.33330.66670.7456003.73.7
Fe4OSFe0.33330.66670.926003.83.8
Ni4OSNi0.33330.66670.926
Fe3OSSFe0.500003.13.1
Ni3OSSNi0.500
Fe1TSFe000.055400−55
Ni1TSNi000.0554
Fe2TSFe0.33330.66670.092700−4.34.3
Ni2TSNi0.33330.66670.0927
Fe6ORFe0.33330.66670.208300−4.64.6
Ni6ORNi0.33330.66670.2083
Fe5ORSFe0.83530.67070.1508003.53.5
Ni5ORSNi0.83530.67070.1508
O1O0.82480.64960.0359
O2O0.33330.66670.0345
O3O0.51070.02140.1107
O4O000.1128
O5O0.16250.3250.1801
O6O0.33330.66670.8187
O7O0.48370.96740.25

Moment components are along the crystal axes a, b, c (μB), as magCIF writes them. Symmetry generates the rest of the cell from these sites.

Source

M. I. Morch et al. IUCrJ (2019) · doi:10.1107/S2052252519003130

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 0.844_SrNi2Fe16O27.mcif from MAGNDATA · entry page

sha256 of this copy: d26aeb08d4354652b8764405c92b50303c1eb351d3771d4b176e12fbec5848fb
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 0.844_SrNi2Fe16O27.mcif.