用定向凝固技术制备了择优方向为[112]的0.70Pb(Mg1/3Nb2/3)O3-0.30PbTiO3高性能定向压电陶瓷.该陶瓷[112]方向的取向度约为35％,准静态压电常数d33约为1500-1600pC/N,耦合系数kt～0.51,k33～0.82,22kV/cm时的场致应变约为0.23％.
High performance grain-oriented 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 ceramics were prepared by the directional solidification method, of which the preferential orientation is [112], and the orientation degree is about 35%, the quasistatic d33 is about 1500-1600pC/N, coupling factors kt is 0.51 and k33 is 0.82, and the strain is 0.23% under 22kV/cm electric field.
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