液相烧结Pb(Mg/sub 1/3/Nb/sub 2/3/)/sub 1-x/Zr/sub x/O/sub 3/陶瓷的介电性能

[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics Pub Date : 1990-06-06 DOI:10.1109/ISAF.1990.200312

Gung-Fu Chen, S. Cheng, Chien-min Wang

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引用次数: 1

摘要

以Bi/sub 2/O/sub 3/Li/sub 2/O和PbO为助熔剂，对Pb(Mg/sub 1/3/Nb/sub 2/3/)/sub 1-x/Zr/sub x/O/sub 3/陶瓷(PMN/sub 1-x/PZ/sub x/)进行了液相烧结。PMN/sub - 1-x/PZ/sub -x/的烧结温度可从1300℃降至1000℃以下，除作为液相助熔剂外，Bi/sub - 2/O/sub - 3//Li/sub - 2/O和PbO均具有居里移位剂和抑制剂的作用。Bi/sub 2/O/sub 3//Li/sub 2/O降低了PMN/sub 1-x/PZ/sub x/的居里温度，而PbO则使居里温度升高。Bi/sub - 2/O/sub - 3//Li/sub - 2/O的加入增强了PMN/sub - 1-x/PZ/sub -x/的弛豫特性。PbO不能弛豫，因此只能使PMN/sub - 1-x/PZ/sub -x/的介电最大值区略微变宽。研究了Bi/sub - 2/O/sub - 3/ Li/sub - 2/O和PbO对PMN/sub - 1-x/PZ/sub -x/介电性能的影响。

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Dielectric properties of liquid phase sintered Pb(Mg/sub 1/3/Nb/sub 2/3/)/sub 1-x/Zr/sub x/O/sub 3/ ceramics

Liquid phase sintering of Pb(Mg/sub 1/3/Nb/sub 2/3/)/sub 1-x/Zr/sub x/O/sub 3/ ceramics (PMN/sub 1-x/PZ/sub x/) was carried out via the fluxing agents of Bi/sub 2/O/sub 3/Li/sub 2/O and PbO. The sintering temperature of PMN/sub 1-x/PZ/sub x/ could be lowered from 1300 degrees C to less than 1000 degrees C. Besides acting as a liquid-phase fluxing agent, both Bi/sub 2/O/sub 3//Li/sub 2/O and PbO behave as a Curie shifter and depressor. Bi/sub 2/O/sub 3//Li/sub 2/O decreases the Curie temperature of PMN/sub 1-x/PZ/sub x/, while PbO shifts the Curie temperature in an upward manner. The relaxation characteristics of PMN/sub 1-x/PZ/sub x/ were enhanced with the incorporation of Bi/sub 2/O/sub 3//Li/sub 2/O. PbO cannot relax and therefore can only slightly broaden the dielectric maximum region of PMN/sub 1-x/PZ/sub x/. The effects of Bi/sub 2/O/sub 3//Li/sub 2/O and PbO on the dielectric properties of PMN/sub 1-x/PZ/sub x/ were also investigated.<>

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来源期刊

[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics

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