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 Mn 3 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 Mn 3 is much more prominent, which implies that Mn 3 may have great potential in magnetic multifunctional material.