| 摘要 |
A piezoelectric/electrostrictive material is made of a BaTiO3-based porcelain composed mainly of BaTiO3, and a strain (S4000) of transversal direction is 650x10-6 or more in an electric field of 4,000 V/mm. This porcelain has a Curie temperature of 110 to 130° C., and its crystal phase at ambient temperature consists essentially of tetragonal and cubic phases. The piezoelectric/electrostrictive material being composed of this porcelain is superior in strain to conventional products, and can be suitably used in an actuator or a sensor.
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