以压电体(K0.45Na0.55)0.98 Li0.02 Nb0.77 Ta0.18Sb.05 O3和压磁体Co0.85 Cu0.15 Fe2O为原料,通过传统的固相反应法制备了(1-x) [(K0.45 Na0.55)0.98Li0.02Nb0.77Ta0.18Sb0.05 O3]-xCo0.85Cu0.15 Fe2 O4多铁性复合陶瓷,并使用X射线衍射仪、扫描电子显微镜、压电测试仪、铁电测试仪和磁电耦合测试仪对物相、显微结构、压电、铁电、磁电耦合性能进行了分析.结果表明,复合陶瓷的相结构保持为(K45 Na0.55)n98Li0.02Nb0.77Ta0.18Sb0.05O3和Co0.85Cu0.15 Fe2O4两种物相,但两者之间发生了轻微的化学反应.随着Co0.85Cu0.15 Fe2 O4压磁相含量的增加,复合陶瓷的压电系数从56 pC/N减小到21 pC/N,剩余极化强度略有降低.在压磁相含量为0.2时可获得4.3 mV·cm-1·Oe-1的最佳磁电耦合系数.
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