ABSTRACT

The shape memory effect (SME) can be observed not only in special alloys or polymers but also in ceramic materials termed shape memory ceramics (SMCs). Examples of ceramic materials showing memory properties include partially stabilized zirconia and ferroelectric lead zirconate titanate. In the case of SMCs, rather than stress-induced or thermally induced phase transitions, the elastic strain change associated with the electric field–induced phase transition is utilized to enable smarter actuation than normal piezoelectrics or electrostrictors.