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首页> 外文期刊>Ferroelectrics >Morphotropic Phase Boundary of 0.875Pb(ZrxTi1-x)O-3-0.125Pb (Mg1/3Nb2/3)O-3 Ceramics
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Morphotropic Phase Boundary of 0.875Pb(ZrxTi1-x)O-3-0.125Pb (Mg1/3Nb2/3)O-3 Ceramics

机译:0.875Pb(ZrxTi1-x)O-3-0.125Pb(Mg1 / 3Nb2 / 3)O-3陶瓷的形态相界

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摘要

Effects of Zr/Ti ratios on phase formation and electrical properties of ceramics in 0.875Pb(ZrxTi1-x)O-3-0.125Pb(Mg1/3Nb2/3)O-3 or PZT-PMgN (with x = 0.46, 0.48, 0.50, 0.52, and 0.54) system, prepared by a solid state reaction technique, have been investigated in order to identify the morphotropic phase boundary (MPB) composition. With XRD analysis, the crystal structure of dense specimens appeared to change gradually from tetragonal to rhombohedral with increasing Zr content. The dielectric properties measurements showed a maximum dielectric constant (E-max) at x = 0.50, while the transition temperature (T-max) decreased with increasing Zr content. In addition, the polarization-electric field (P-E) hysteresis loops of the ceramic systems also changed significantly with the Zr content, in which the remnant polarization (P-r) reached maximum value at x = 0.50. The results clearly showed the significance of Zr/Ti ratio in controlling the phase formation and electrical properties of the PZT-PMgN ceramic system.
机译:Zr / Ti比对0.875Pb(ZrxTi1-x)O-3-0.125Pb(Mg1 / 3Nb2 / 3)O-3或PZT-PMgN(x = 0.46,0.48,已经研究了通过固态反应技术制备的0.50、0.52和0.54)体系,以鉴定同相相界(MPB)组成。 X射线衍射分析表明,随着Zr含量的增加,致密样品的晶体结构逐渐从四面体变为菱面体。介电性能测量结果表明,在x = 0.50时,最大介电常数(E-max),而转变温度(T-max)随着Zr含量的增加而降低。此外,陶瓷系统的极化电场(P-E)磁滞回线也随Zr含量而发生显着变化,其中残余极化(P-r)在x = 0.50时达到最大值。结果清楚地表明了Zr / Ti比在控制PZT-PMgN陶瓷体系的相形成和电性能中的重要性。

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