| 摘要 |
There is realized a piezoelectric/electrostrictive device of a laminated type from which a large displacement is obtained and which is highly reliable over a long period. A laminated piezoelectric/electrostrictive device 1 has: a laminated columnar article 10 constituted by alternately laminating a plurality of piezoelectric/electrostrictive layers 14 and inner electrode layers 18, 19 ; and a pair of outer electrodes 28, 29 disposed on a peripheral surface of the laminated columnar article 10 to connect layers having the same polarity to each other among the inner electrode layers 18, 19 . This laminated piezoelectric/electrostrictive device 1 is characterized in that interfaces 2 a , 2 b having a relatively low interface strength as compared with the other interfaces are disposed at a specific interval among the interfaces between layers of the laminated columnar article 10.
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