Pressure-induced changes in the magnetic properties of the single crystal of Mn-3 single-molecule magnet

The magnetic measurements of the single crystal of Mn3 single-molecule magnet under high pressure at T=2 K have been performed. We find both the antiferromagnetic intermolecular coupling parameter J and the effective energy barrier to vary compared with the measurements at low pressure. The increase of |J| is estimated to be 12% at 0.7 GPa when compared with that of 0 GPa, whereas the effective energy barrier becomes smaller with increasing pressure. Our results demonstrate that the intermolecular interaction of single-molecule magnet can be changed by pressure. Compared with the normal magnetic alloy, the effect of pressure on the magnetic properties of Mn3 is much more prominent, which implies that Mn3 may have great potential in magnetic multifunctional material.