研究了初始粉体中氧化铅欠缺对PZN基陶瓷的相组成、有序微区、介电和电致应变性能的影响.研究发现,随着氧化铅欠缺量的增大,预烧粉体和陶瓷的焦绿石相含量逐渐增大、钙钛矿相含量逐渐减少.当铅欠缺小于1%时,随着铅欠缺量的增大, PZN基陶瓷的有序微区、介电常数和电致应变大幅度增大;而当铅欠缺大于1%时,铅欠缺会使介电和电致应变性能下降.而铅欠缺对介电损耗影响很小.铅欠缺使介电和电致应变性能增加的原因主要是由于"有效有序微区"尺寸的增大和晶界间过量氧化铅层的消除.
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