Single Crystal PMN-PT is an electromechanically active crystal which has a combination of piezoelectric and electrostrictive properties resulting in superior electromechanical conversion properties. Unlike our familiar piezos which are created as sintered blocks of ceramic, PMN-PT starts life as a large pure crystal artificially grown slowly out of a melt. It is inherently different that piezoceramic both in application and in handling, and therefore should not be thought of as a 'drop in' replacement of piezoceramic parts, but rather as 'ground up' design option for applications requiring higher energy density than possible with piezoceramics.