is a member of the garnet family of compounds,
(
CO
)
, whose magnetic properties are affected by a high degree of geometrical frustration. The magnetic frustration
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is a member of the garnet family of compounds,
(
CO
)
, whose magnetic properties are affected by a high degree of geometrical frustration. The magnetic frustration is at the origin of the intriguing magnetic properties that these materials exhibit, such as a long range
hidden order derived from multipoles formed from 10-spin loops in the gadolinium gallium garnet, Gd
Ga
O
.
garnet is isostructural to the thoroughly investigated Gd garnets, Gd
Ga
O
and Gd
Al
O
. Moreover, in
, the Heisenberg-like Mn
magnetic ions (
0) are also arranged in corner sharing triangles that form a hyperkagomé structure. The identical crystallographic structures and similar Heisenberg-like behaviour of the magnetic ions make manganese aluminium germanium garnet the closest compound to the gadolinium garnets in its magnetic properties. Here, we report, for the first time, the growth of a large, high quality single crystal of the
garnet by the floating zone method. X-ray diffraction techniques were used to characterise and confirm the high crystalline quality of the
crystal boule. Temperature-dependent magnetic susceptibility measurements reveal an antiferromagnetic ordering of the Mn
ions below
6.5 K. The high quality of the single crystal obtained makes it ideal for detailed investigations of the magnetic properties of the system, especially using neutron scattering techniques.
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