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首页> 外文期刊>Materials Science and Engineering. B, Solid-State Materials for Advanced Technology >Microstructure evolutions and electrical properties of Pb_(1-x)La_x(Zr_(0.56)Ti_(0.44))_(1-x/4)O_3 ceramics
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Microstructure evolutions and electrical properties of Pb_(1-x)La_x(Zr_(0.56)Ti_(0.44))_(1-x/4)O_3 ceramics

机译:Pb_(1-x)La_x(Zr_(0.56)Ti_(0.44))_(1-x / 4)O_3陶瓷的微观结构演变和电性能

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摘要

Microstructure evolutions and electrical properties of Pb_(1-x)La_x(Zr_(0.56)Ti_(0.44))_(1-x/4)O_3 (x = 0.02, 0.04, 0.06, 0.08, 0.10, 0.12, 0.125) ceramics with the increasing of La content have been investigated. The series compositions have been chosen because these compositions are across the economically important morphotropic phase boundary (MPB) area in the phase diagram of the PLZT solid-solution system. The samples have been prepared by a conventional mixed oxide method followed by sintering in PbZrO_3 powder under air atmosphere, so that A-site vacancies have been obtained mostly. Then X-ray diffraction investigation, microstructure, dielectric properties of the ceramics are carried out. For all sets of samples the variation of La content induces changes in the physical properties. Otherwise, the mechanism of the microstructure evolutions of PLZT ceramics has been discussed,.
机译:Pb_(1-x)La_x(Zr_(0.56)Ti_(0.44))_(1-x / 4)O_3(x = 0.02、0.04、0.06、0.08、0.10、0.12、0.125)陶瓷的微观结构演变和电性能随着La含量的增加,已经进行了研究。选择系列组合物是因为这些组合物跨越了PLZT固溶系统相图中经济上重要的同相相界(MPB)区域。样品是通过常规的混合氧化物方法制备的,然后在空气气氛下在PbZrO_3粉末中烧结,因此大部分获得了A位空位。然后进行了X射线衍射研究,陶瓷的微观结构,介电性能。对于所有样品组,La含量的变化都会引起物理性质的变化。另外,还讨论了PLZT陶瓷的微观结构演变机理。

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