Abstract:
AbstractHere we report the successful synthesis of large single crystals of triangular frustrated PrMgAl
11O
19 using the optical floating zone technique. Single crystal x-ray diffraction (XRD) measurements unveiled the presence of quenched disorder within the mirror plane, specifically ~7% of Pr ions deviating from the ideal 2
d site towards the 6
h site. Magnetic susceptibility measurements revealed an Ising anisotropy with the
c-axis being the easy axis. Despite a large spin-spin interaction that develops below ~10 K and considerable site disorder, the spins do not order or freeze down to at least 50 mK. The availability of large single crystals offers a distinct opportunity to investigate the exotic magnetic state on a triangular lattice with an easy axis out of the plane.
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