abstract |
A piezoelectric/electrostrictive material having a nonstoichiometric composition represented by a general formula (1): n (1 - x) (Bi a Na b TiO 3+´ )-x(K c NbO 3+¶ )(1) nwherein 0.01 ¤ x < 0.08, a < 0.5, 1.01 ¤ (a/b) ¤ 1.08, 0.92 ¤ (a + b)/c < 0.99, and 0.9 ¤ c ¤ 1.1, and ¶ 0 when ´ = 0 and ´ 0 when ¶ = 0. |